Hampton v. Commissioner of Correction , 174 Conn. App. 867 ( 2017 )


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  •        TRAVIS HAMPTON v. COMMISSIONER OF
    CORRECTION
    (AC 39280)
    DiPentima, C. J., and Keller and Prescott, Js.
    Syllabus
    The petitioner, who had been convicted of various offenses with his accom-
    plice, M, arising out of the sexual assault of the victim at gunpoint,
    sought a writ of habeas corpus alleging that defense counsel at his
    criminal trial had rendered ineffective assistance. The jury in the underly-
    ing criminal trial had acquitted the petitioner of count seven of the
    information, which charged him with sexual assault as a principal, but
    found him guilty under count eight of the information, which charged
    him with sexual assault as an accessory. In the instructions to the jury,
    the trial court erroneously stated that the petitioner could be convicted
    as a principal or accessory with respect to count eight. In the petitioner’s
    direct appeal from his conviction, our Supreme Court determined that
    defense counsel had waived any claim that the jury had not been charged
    correctly as to count eight because he had acquiesced to the charge as
    given. The petitioner alleged in his petition for a writ of habeas corpus
    that he was prejudiced by defense counsel’s deficient performance
    because the jury was permitted to return a nonunanimous verdict of
    guilty as to count eight, as it was unclear whether the jury found him
    guilty as a principal or as an accessory. The habeas court concluded that
    the petitioner was not prejudiced by any allegedly deficient performance
    because the petitioner had been acquitted of count seven, which charged
    him with sexual assault as a principal only, such that no juror logically
    could have found him guilty as a principal in count eight. The habeas
    court therefore concluded that the jury must have unanimously found
    him guilty under count eight as an accessory to M’s assault of the victim.
    The habeas court rendered judgment denying the petition and, thereafter,
    granted the petition or certification to appeal, and this appeal followed.
    Held that the habeas court properly denied the petition for a writ of
    habeas corpus, that court having properly determined that the precise
    harm that the petitioner asserted by defense counsel’s deficient perfor-
    mance was not so significant that there was a reasonable probability
    that the outcome of the trial with respect to count eight would have
    been different; there was no reasonable probability that some jurors
    could have convicted the petitioner of sexual assault as a principal on
    count eight while others could have convicted him as an accessory with
    respect to that same count, or that the verdict on count eight would
    have been different had the court not made the instructional mistake,
    as the jury had before it the amended information, which solely alleged
    in count eight that the petitioner intentionally aided M in sexually
    assaulting the victim, the prosecutor had explained during his closing
    argument that count eight pertained to the petitioner’s acts that helped
    M assault the victim, the jurors acquitted the petitioner of count seven,
    which had charged the petitioner as a principal only, and there was
    only a mere possibility that the court’s improper instruction on count
    eight caused juror confusion, which was insufficient to meet the high
    burden of proving that there was a reasonable probability that, but for
    counsel’s unprofessional errors, the result of the trial as to count eight
    would have been different.
    Argued April 12—officially released July 25, 2017
    Procedural History
    Amended petition for a writ of habeas corpus,
    brought to the Superior Court in the judicial district of
    Tolland and tried to the court, Sferrazza, J.; judgment
    denying the petition, from which the petitioner, on the
    granting of certification, appealed to this court.
    Affirmed.
    Jade N. Baldwin, for the appellant (petitioner).
    Melissa L. Streeto, senior assistant state’s attorney,
    with whom, on the brief, were Gail P. Hardy, state’s
    attorney, and Tamara Grosso, assistant state’s attorney,
    for the appellee (respondent).
    Opinion
    PRESCOTT, J. The petitioner, Travis Hampton,
    appeals from the judgment of the habeas court denying
    his petition for a writ of habeas corpus.1 On appeal,
    the petitioner claims that the habeas court improperly
    concluded that his claim of ineffective assistance of
    trial counsel fails on the prejudice prong of the test set
    forth in Strickland v. Washington, 
    466 U.S. 668
    , 687, 
    104 S. Ct. 2052
    , 
    80 L. Ed. 2d 674
    (1984). Having thoroughly
    reviewed the record, we conclude that the habeas court
    properly denied the petition and, accordingly, affirm
    the judgment.
    The following facts, as set forth by our Supreme Court
    in the petitioner’s direct criminal appeal, and proce-
    dural history are relevant to this appeal. ‘‘At approxi-
    mately 1:30 a.m. on August 23, 2003, the [petitioner]
    was with his friend, James Mitchell, when Mitchell
    received a telephone call from the victim, a young
    woman he knew, asking for a ride to her home in East
    Hartford. Mitchell drove his car to the location of the
    victim and picked her up. The three then drove to a
    nearby restaurant. After entering the restaurant and
    remaining there for a while, the [petitioner] and the
    victim returned to the car, where Mitchell had remained.
    Mitchell told the victim that he would drive her home,
    but he did not. Instead, Mitchell began angrily ques-
    tioning the victim as to the whereabouts of her brother,
    who, both Mitchell and the [petitioner] suspected, was
    involved in a romantic relationship with Mitchell’s for-
    mer girlfriend. The victim informed Mitchell and the
    [petitioner] that her brother was staying at her grandfa-
    ther’s house, but after driving there, Mitchell and the
    [petitioner] realized that the victim had lied to them.
    Mitchell then drove first to his mother’s house in Hart-
    ford, and then to an apartment complex. The victim
    repeatedly pleaded with Mitchell to take her home, but
    he did not comply. Mitchell drove his car from the
    apartment complex and brought the victim and the
    [petitioner] to a closed gas station near Market Street
    in Hartford and parked behind the building, where it
    was dark. . . .
    ‘‘Mitchell then told the victim to get out of the car
    because he wanted to talk to her. Mitchell, the [peti-
    tioner] and the victim exited the car. The victim, antici-
    pating that ‘something bad’ was about to happen,
    started to walk away, but stopped when the [petitioner]
    took a shotgun out of the car and pointed it at her face.
    After the victim refused to tell Mitchell her brother’s
    location, Mitchell became angry and ordered the victim
    to take her clothes off. The victim removed her pants,
    and Mitchell sexually assaulted her by engaging in vagi-
    nal intercourse with her. The [petitioner] kept the shot-
    gun pointed at the victim throughout the assault.
    ‘‘Angry and scared, the victim pleaded with Mitchell
    and the [petitioner] to let her go. Mitchell then gave
    the victim the choice to climb into a nearby dumpster
    or attempt to run away. As the victim started running,
    Mitchell fired the shotgun hitting her in the stomach.
    The victim continued to run toward the front of the gas
    station, and Mitchell followed her in the car while the
    [petitioner] pursued her on foot, holding the shotgun.
    Despite the victim pleading with the [petitioner] to stop,
    he shot and wounded her in the right side. The victim,
    bleeding profusely, ran across Market Street and tried
    to hide behind some trees on the side of the road. The
    [petitioner] followed her and shot at her several more
    times, hitting her in the face and the upper thigh. The
    victim then dropped to the ground and pretended to
    be dead. The [petitioner] walked over to the victim,
    who was lying on the ground, and shot her one final
    time in her left arm. Thinking that the victim was dead,
    the [petitioner] got back into the car, which Mitchell
    was driving, and they drove away. They quickly
    returned, however, to verify that the victim was dead.
    The [petitioner] got out of the car, walked over to the
    motionless victim, kicked her once, and said, ‘She’s
    dead.’ The [petitioner] and Mitchell then again drove
    away.
    ‘‘The victim subsequently was discovered by a pas-
    serby and ultimately was taken to the hospital, where,
    after receiving medical attention, she informed authori-
    ties that Mitchell and a person that she did not know,
    later identified as the [petitioner], had sexually
    assaulted and shot her. Late in the evening of August
    27, 2003, Mitchell and the [petitioner] were arrested.’’
    (Footnotes omitted.) State v. Hampton, 
    293 Conn. 435
    ,
    438–41, 
    988 A.2d 167
    (2009).
    Thereafter, the petitioner was charged, via an
    amended information dated January 17, 2006, with
    attempt to commit murder in violation of General Stat-
    utes §§ 53a-49 (a) and 53a-54a, conspiracy to commit
    murder in violation of General Statutes §§ 53a-48 (a)
    and 53a-54a, kidnapping in the first degree in violation
    of General Statutes §§ 53a-92 (a) (2) (A) and 53a-8,
    conspiracy to commit kidnapping in the first degree in
    violation of General Statutes §§ 53a-48 and 53a-92 (a)
    (2) (A), assault in the first degree with a firearm in
    violation of General Statutes §§ 53a-59 (a) (5) and 53a-
    8, conspiracy to commit assault in the first degree in
    violation of §§ 53a-48 (a) and 53a-59 (a) (5), sexual
    assault in the first degree as a principal in violation of
    General Statutes § 53a-70 (a) (1), sexual assault in the
    first degree as an accessory in violation of §§ 53a-70
    (a) (1) and 53a-8, conspiracy to commit sexual assault
    in the first degree in violation of §§ 53a-48 and 53a-70
    (a) (1), and criminal possession of a firearm in violation
    of General Statutes § 53a-217 (a) (1). 
    Id., 438. The
    petitioner’s case was tried before a jury of six.
    See 
    id., 448 n.12.
    During the trial, the state presented
    evidence of three separate sexual acts that the victim
    had been forced to engage in—vaginal intercourse with
    Mitchell, fellatio with the petitioner, and vaginal inter-
    course with the petitioner2—although the petitioner
    only was charged with two counts of first degree sexual
    assault in the amended information—one count encom-
    passing the fellatio and vaginal intercourse allegedly
    committed by the petitioner personally, and one count
    encompassing the vaginal intercourse by Mitchell to
    which the petitioner allegedly was an accessory. More
    specifically, count seven alleged in relevant part that
    ‘‘the [petitioner] . . . did compel [the victim] . . . to
    engage in sexual intercourse by the threatened use of
    force against her which caused her to fear physical
    injury,’’ and count eight alleged in relevant part that ‘‘the
    [petitioner] . . . did intentionally aid James Mitchell in
    compelling [the victim] . . . to engage in sexual inter-
    course by the threatened use of force against her which
    caused her to fear physical injury.’’
    Notably, during trial, ‘‘the [petitioner] did not file a
    request to charge. Before it charged the jury, the trial
    court held a charging conference at which it reviewed,
    page by page, its written charge with the parties. The
    trial court gave both parties a printed copy of the jury
    instructions for their review. During the charging con-
    ference, with regard to counts seven and eight of the
    information . . . the trial court specifically inquired of
    the parties as to whether there would be a unanimity
    problem because the state had failed to allege in the
    information which specific acts of sexual intercourse
    had occurred. In response, the state pointed out that
    count eight of the information concerned the [petition-
    er’s] participation in aiding Mitchell in Mitchell’s sexual
    assault of the victim. Because the evidence supported
    a finding that Mitchell had engaged only in vaginal inter-
    course with the victim, the state noted that there would
    be only one factual basis upon which the jury could
    find the [petitioner] guilty, and, thus, there would be
    no unanimity problem.’’ (Footnote omitted; emphasis
    omitted.) 
    Id., 445–46. With
    regard to unanimity on count seven, the court,
    the prosecutor, and the court officer engaged in the
    following colloquy:
    ‘‘The Court: . . . But there’s one sexual assault
    [charge] in which he’s the principal it’s alleged?
    ‘‘[The Prosecutor]: Yes.
    ‘‘The Court: Even though the testimony involved two
    sexual assaults?
    ‘‘[The Prosecutor]: Right. . . .
    ‘‘The Court: . . . But it’s . . . alleged that [the peti-
    tioner] had sex with her in two different fashions. . . .
    ‘‘[The Prosecutor]: She—it’s just charged that [the
    petitioner] forced her to engage in sexual intercourse,
    and it’s not distinguished as to what type.
    ‘‘The Court: Well, then the question is, is there any
    requirement of specific unanimity on that? . . . We’ll
    have to look that up. . . .
    ‘‘The Court: . . . [M]y issue is particularly as far as
    the argument is concerned and the charge is concerned.
    Certainly the jury would not have to believe both.
    ‘‘[The Prosecutor]: Right.
    ‘‘The Court: But could you have three believing one
    type of sexual contact and three believing the other or
    five and one or whatever permutation you come up
    with? And that’s—do you have any cases for me on that
    for me to decide on? Do you have any position on that,
    you can’t add another count on sexual assault?
    ‘‘[The Prosecutor]: No. And there was no request for
    a bill of particulars, so this is particularized. . . .
    ‘‘[The Court Officer]: . . . I think it’s going to be for
    the jury to sort it out. If three of them believe oral
    sex happened and three of them believe vaginal sex
    happened by the [petitioner] as principal under count
    seven, then they find him guilty of count seven.’’
    After the colloquy on unanimity, ‘‘the trial court solic-
    ited additional suggestions from the parties with
    regards to the jury charge. When the state responded
    that nothing else was required, the trial court explicitly
    asked defense counsel whether he had any further
    changes. Defense counsel responded that his ‘only
    request’ related to a conspiracy charge under Pinkerton
    liability.3 After the trial court addressed that concern,
    it again directly asked defense counsel, ‘Anything else?’
    to which defense counsel responded, ‘No.’ . . . After
    the parties reviewed [a copy of] the revised instructions,
    the trial court again directly solicited comments from
    both parties. Defense counsel stated that he had
    received and reviewed the instructions and that they
    ‘appear[ed] to be in order.’ ’’ (Footnotes altered.) 
    Id., 446–47. Thereafter,
    in its final charge as to count seven, the
    court instructed the jury that ‘‘the [petitioner] is charged
    solely as a principal.’’ With respect to count eight,
    despite the language in that count of the amended infor-
    mation charging the petitioner only as an accessory,
    the court instructed the jury that the offense ‘‘can be
    proven by the state in any one of the following ways:
    that the [petitioner] committed the crime as a principal;
    that the [petitioner] was an accessory to the crime;
    or, third, that the [petitioner] is guilty by way of the
    Pinkerton theory of vicarious liability.’’4 The court
    ‘‘instructed the jury that it did not have to be unanimous
    in deciding whether the [petitioner] was guilty as a
    principal or an accessory.’’ 
    Id., 447–48. In
    conjunction
    with the court’s charge, a verdict form was submitted
    to the jury.
    ‘‘At the end of its jury instructions, the trial court
    asked the parties whether either took exception to the
    charge, and neither party did. The jury ultimately acquit-
    ted the [petitioner] of count seven, which alleged sexual
    assault in the first degree as a principal, and convicted
    him of the remaining charges, including sexual assault
    in the first degree as charged in the eighth count.’’ 
    Id., 448. The
    verdict form indicated that, as to count eight,
    the petitioner was found ‘‘guilty by way of principal or
    accessory liability’’ as opposed to Pinkerton vicarious
    liability. He subsequently was sentenced to a total effec-
    tive sentence of fifty-nine years imprisonment.
    The petitioner appealed from the judgment of convic-
    tion. On direct appeal, he claimed ‘‘that the trial court
    improperly: (1) denied his motion to suppress a written
    confession that he had made after waiving his Miranda5
    rights; (2) failed to instruct the jurors that they had to
    agree unanimously on the factual basis [i.e., whether
    he acted as an accessory or as a principal] underlying
    the sexual assault charges against the [petitioner];6 and
    (3) failed to instruct the jurors adequately on the spe-
    cific intent necessary to convict the [petitioner] as an
    accessory on the charges of attempt to commit murder,
    kidnapping in the first degree, assault in the first degree
    and sexual assault in the first degree.’’ (Footnotes
    altered.) 
    Id., 438. Our
    Supreme Court affirmed the judg-
    ment of conviction. In doing so, it specifically concluded
    that the petitioner had waived his second claim regard-
    ing nonunanimity as to count eight and, thus, declined
    to review it: ‘‘The record in the present case . . . dem-
    onstrates that defense counsel had been made aware
    of the issue regarding the unanimity charge not once,
    but twice, and in both instances, despite requests from
    the trial judge for any changes, additions or deletions,
    defense counsel stated that he had none, thus assenting
    to the charge that was given.’’ 
    Id., 450. Subsequently,
    on November 19, 2015, the petitioner
    filed an amended petition for a writ of habeas corpus
    alleging ineffective assistance of trial counsel. The peti-
    tioner alleged that the performance of his trial counsel,
    Donald O’Brien, was constitutionally deficient because
    he failed to object to the jury instructions given by the
    court as to count eight of the amended information,
    thereby permitting the jury to reach a nonunanimous
    verdict on that count.7 On March 29, 2016, the habeas
    court, Sferrazza, J., held a trial in which it heard testi-
    mony from O’Brien and Dean Popkin, a Connecticut
    criminal defense attorney.
    After trial, the habeas court denied the petition for
    a writ of habeas corpus. In its written memorandum of
    decision dated May 6, 2016, the court assumed,
    arguendo, that O’Brien had performed deficiently by
    failing to object to the court’s error in instructing the
    jurors that they could find the petitioner guilty on count
    eight as a principal in light of the fact that the state
    had alleged only accessorial liability in that count of
    its amended information. The court concluded, how-
    ever, that the petitioner had failed to establish preju-
    dice, stating: ‘‘In order to return a not guilty verdict as
    a principal of the sexual assault charge alleged in count
    seven, the jury was clearly and properly instructed that
    the jury had to agree unanimously on that acquittal. By
    unanimously determining that the state had failed to
    prove the petitioner guilty as a principal, no juror logi-
    cally could have then found him to be guilty of sexual
    assault as a principal in count eight. Such verdicts were
    mutually exclusive. The court draws the only reason-
    able conclusion that the jury must have unanimously
    found the petitioner guilty of sexual assault as an acces-
    sory to Mitchell’s rape.’’ (Emphasis in original.) This
    appeal followed.
    As an initial matter, we set forth the applicable stan-
    dard of review and principles of law. ‘‘The habeas court
    is afforded broad discretion in making its factual find-
    ings, and those findings will not be disturbed unless
    they are clearly erroneous. . . . [T]he habeas judge, as
    the trier of facts, is the sole arbiter of the credibility
    of witnesses and the weight to be given to their testi-
    mony. . . . The application of the habeas court’s fac-
    tual findings to the pertinent legal standard, however,
    presents a mixed question of law and fact, which is
    subject to plenary review.’’ (Citations omitted; internal
    quotation marks omitted.) Gaines v. Commissioner of
    Correction, 
    306 Conn. 664
    , 677, 
    51 A.3d 948
    (2012).
    ‘‘The petitioner’s right to the effective assistance of
    counsel is assured by the sixth and fourteenth amend-
    ments to the federal constitution, and by article first,
    § 8, of the constitution of Connecticut.’’ Sanders v.
    Commissioner of Correction, 
    83 Conn. App. 543
    , 549,
    
    851 A.2d 313
    , cert. denied, 
    271 Conn. 914
    , 
    859 A.2d 569
    (2004). ‘‘To succeed on a claim of ineffective assistance
    of counsel, a habeas petitioner must satisfy the two-
    pronged test articulated in Strickland v. Washington,
    [supra, 
    466 U.S. 687
    ]. Strickland requires that a peti-
    tioner satisfy both a performance prong and a prejudice
    prong. To satisfy the performance prong, a [petitioner]
    must demonstrate that counsel made errors so serious
    that counsel was not functioning as the counsel guaran-
    teed . . . by the [s]ixth [a]mendment [to the United
    States constitution]. . . . To satisfy the prejudice
    prong, a [petitioner] must demonstrate that there is a
    reasonable probability that, but for counsel’s unprofes-
    sional errors, the result of the proceeding would have
    been different. . . . The claim will succeed only if both
    prongs are satisfied.’’ (Citations omitted; internal quota-
    tion marks omitted.) Small v. Commissioner of Correc-
    tion, 
    286 Conn. 707
    , 712–13, 
    946 A.2d 1203
    , cert. denied
    sub nom. Small v. Lantz, 
    555 U.S. 975
    , 
    129 S. Ct. 481
    ,
    
    172 L. Ed. 2d 336
    (2008). ‘‘[A] court need not determine
    whether counsel’s performance was deficient before
    examining the prejudice suffered by the [petitioner].’’
    Strickland v. 
    Washington, supra
    , 697.
    In the present appeal, the precise nature of the peti-
    tioner’s claim is somewhat unclear. In his brief, he
    appears to argue that his trial counsel’s failure to object
    to the court’s instruction on count eight was constitu-
    tionally deficient performance because he had not been
    charged as a principal in count eight of the amended
    information, yet the court nevertheless instructed the
    jury that it could find him guilty as a principal, as an
    accessory, or under the Pinkerton theory of vicarious
    liability. In light of the fact that (1) the habeas court
    assumed that the petitioner had met his burden to prove
    deficient performance, and (2) our Supreme Court, in
    the petitioner’s direct appeal, indicated that the court
    should not have instructed the jury on principal liability
    because it had not been pleaded in count eight of the
    information,8 the question of whether counsel’s perfor-
    mance was deficient is not truly in dispute.9 Rather, the
    critical inquiry for this court is to focus on the precise
    harm that the petitioner asserts was created by this
    deficient performance and whether that harm is so sig-
    nificant that there is a reasonable probability that the
    outcome of the trial, with respect to count eight, would
    have been different.
    In conducting this inquiry, we believe it is important,
    given that the alleged prejudice must flow from the
    precise claim of ineffective assistance being made, to
    note several points that are clear to us. First, the peti-
    tioner does not argue that he was prejudiced because
    the jury was permitted to consider a theory of liability
    of which he had not received notice.10 In other words,
    he has not argued, in his attempt to establish prejudice,
    that had he known the state’s true theory of liability
    for count eight, he would have defended the count dif-
    ferently, and that had he done so, there is a reasonable
    probability that he would have been acquitted of that
    count.
    Second, in his attempt to establish that he was preju-
    diced by his trial counsel’s deficient performance, the
    petitioner has not argued that the guilty verdict on count
    eight was factually and/or legally inconsistent with the
    verdict of acquittal on count seven. Even if his counsel’s
    failure to object to the charge as given ultimately led
    to factually inconsistent verdicts on counts seven and
    eight, such a result, as a matter of law, would not consti-
    tute prejudice: ‘‘[I]t is well established that factually
    inconsistent verdicts are permissible. [When] the ver-
    dict could have been the result of compromise or mis-
    take, we will not probe into the logic or reasoning of
    the jury’s deliberations or open the door to interminable
    speculation.’’ (Emphasis in original; internal quotation
    marks omitted.) State v. Nash, 
    316 Conn. 651
    , 659, 
    114 A.3d 128
    (2015).
    If the petitioner had attempted to argue that the ver-
    dicts are legally inconsistent, he would have met a simi-
    lar lack of success. Claims regarding legally
    inconsistent verdicts generally are divided into two cat-
    egories. ‘‘The first category involves cases in which it
    is claimed that two convictions are inconsistent with
    each other as a matter of law or are based on a legal
    impossibility. . . . Such convictions . . . are review-
    able . . . . The second category involves cases in
    which the defendant claims that one or more guilty
    verdicts must be vacated because there is an inconsis-
    tency between those guilty verdicts and a verdict of
    acquittal on one or more counts, or an acquittal of a
    codefendant. . . . It is well established that such
    inconsistent verdicts are not reviewable and the defen-
    dant is not entitled to relief . . . .’’ (Citations omitted;
    emphasis in original; internal quotation marks omitted.)
    State v. Anderson, 
    158 Conn. App. 315
    , 332–33, 
    118 A.3d 728
    , cert. granted on other grounds, 
    319 Conn. 908
    , 
    123 A.3d 437
    (2015) (appeal withdrawn May 4, 2016). Thus,
    even if the petitioner had argued that he was prejudiced
    by legally inconsistent verdicts on counts seven and
    eight, this result would not constitute prejudice, as a
    matter of law, because it is not proper for an appellate
    court to compare a verdict of acquittal on one count
    with a verdict of guilt on another count for purposes
    of determining legal consistency.
    This brings us then to the petitioner’s actual argument
    regarding prejudice.11 In terms of what we can divine
    from his brief, the petitioner appears to argue that the
    court’s instruction that the petitioner could be found
    guilty as a principal on count eight was prejudicial
    because it potentially sanctioned a nonunanimous ver-
    dict by creating a scenario under which the jury could
    convict him of the charge in count eight without all of
    the jurors agreeing that the petitioner assisted Mitchell
    by holding a gun to the victim’s head so that Mitchell
    could commit the sexual assault. In other words, the
    petitioner argues that some jurors may have convicted
    him on the basis that the petitioner had held a gun to
    the victim’s head so that Mitchell could commit a sexual
    assault, while others voted to convict on the basis that
    the petitioner, as a principal, had compelled the victim
    to perform fellatio or that he had penetrated her
    vaginally.12
    As previously discussed, ‘‘[t]o satisfy the prejudice
    prong, a [petitioner] must demonstrate that there is a
    reasonable probability that, but for counsel’s unprofes-
    sional errors, the result of the proceeding would have
    been different.’’ (Internal quotation marks omitted.)
    Small v. Commissioner of 
    Correction, supra
    , 
    286 Conn. 713
    . ‘‘A reasonable probability is a probability sufficient
    to undermine confidence in the outcome.’’ (Internal
    quotation marks omitted.) Apodaca v. Commissioner
    of Correction, 
    167 Conn. App. 530
    , 535, 
    146 A.3d 42
    (2016). Given this standard for prejudice, we are not
    persuaded that there is a reasonable probability that
    some members of the jury could have convicted him
    as a principal on count eight and that others could have
    convicted him as an accessory on that same count.
    More specifically, we agree with the habeas court’s
    assessment that the verdict of acquittal as to count
    seven leads us to conclude that there is not a reasonable
    probability that the verdict on count eight would have
    been different had the court not made the instruc-
    tional mistake.
    The habeas court ruled as follows in its memorandum
    of decision: ‘‘In order to return a not guilty verdict as
    a principal of the sexual assault charge alleged in count
    seven, the jury was clearly and properly instructed that
    [it] had to agree unanimously on that acquittal. By unan-
    imously determining that the state had failed to prove
    the petitioner guilty as a principal, no juror could logi-
    cally have then found him to be guilty of sexual assault
    as a principal in count eight. Such verdicts were mutu-
    ally exclusive. The court draws the only reasonable
    conclusion that the jury must have unanimously found
    the petitioner guilty of sexual assault as an accessory
    to Mitchell’s rape.’’ (Emphasis in original.)
    First, the habeas court inartfully used the phrase
    ‘‘mutually exclusive’’ to describe the verdict of acquittal
    on count seven and the verdict of guilt on count eight.
    The term ‘‘mutually exclusive,’’ as used in our case law,
    refers to two convictions that are inconsistent with
    each other as a matter of law or are based on a legal
    impossibility. See State v. 
    Nash, supra
    , 
    316 Conn. 659
    .
    As previously discussed herein, such convictions are
    reviewable and cannot withstand a challenge if ‘‘the
    existence of the essential elements for one offense
    negates the existence of [one or more] essential ele-
    ments for another offense of which the defendant also
    stands convicted.’’ (Internal quotation marks omitted.)
    
    Id. The present
    case, however, does not involve a claim
    contesting two legally inconsistent convictions; accord-
    ingly, the habeas court’s use of the term here does not
    fit. Nevertheless, we find the remainder of its reason-
    ing persuasive.
    In count seven, the petitioner was charged with first
    degree sexual assault as a principal only, and the court
    properly instructed the jury accordingly, expressly stat-
    ing that, for purposes of this case, the jury should con-
    sider sexual intercourse to be vaginal intercourse or
    fellatio. Because we presume the jury properly followed
    the trial court’s instructions in the absence of evidence
    to the contrary; State v. Peeler, 
    271 Conn. 338
    , 371, 
    857 A.2d 808
    (2004), cert. denied, 
    546 U.S. 845
    , 
    126 S. Ct. 94
    , 
    163 L. Ed. 2d 110
    (2005); we assume that the jury
    did not limit its consideration of count seven to only
    one of the two possible acts of sexual assault allegedly
    perpetrated by the defendant as a principal. Rather, we
    presume that it considered both whether the petitioner
    principally compelled the victim to engage in vaginal
    intercourse with him and whether the petitioner princi-
    pally compelled the victim to perform fellatio on him.
    Given that the jury acquitted the petitioner of count
    seven, we must, therefore, presume that it unanimously
    concluded that the state failed to prove beyond a rea-
    sonable doubt either of the two sexual acts that the
    state alleged he committed as a principal.
    Thus, if the jurors unanimously acquitted the peti-
    tioner of acting as the principal in committing the two
    separate acts of sexual assault alleged in count seven,
    this left only one act of sexual assault for them to
    consider in the context of count eight: vaginal penetra-
    tion of the victim by Mitchell. Given this, and in light
    of the fact that the verdict form for count eight indicated
    that the petitioner was found guilty ‘‘as a principal or
    accessory,’’ the most reasonable explanation for the
    verdict on count eight is that the jury found the peti-
    tioner guilty on a theory of accessorial liability for aiding
    Mitchell in sexually assaulting the victim.13 The likeli-
    hood of this outcome becomes even greater considering
    the fact that the jury had before it both the amended
    information for count eight, which solely alleged that
    the petitioner ‘‘did intentionally aid James Mitchell’’ in
    sexually assaulting the victim, and the closing argument
    of the state, in which the prosecutor stated, ‘‘We’re
    charging him [in count eight] . . . that he aided, that
    he helped Mr. Mitchell in engaging in sexual intercourse
    with [the victim].’’14
    Ultimately, the most that can be said of the petition-
    er’s prejudice argument here is that it was merely possi-
    ble that the court’s improper instructions on count eight
    caused juror confusion as to whether some of the jurors
    could have decided that the state met its burden of
    proof with respect to one of the acts of sexual assault,
    while others could have decided that the state met its
    burden of proof with respect to another act of sexual
    assault. For the petitioner to prevail on the prejudice
    prong of his habeas claim of ineffective assistance of
    counsel, however, the high burden is on him to prove
    that there is a reasonable probability that, but for coun-
    sel’s unprofessional errors, the result of the trial as to
    count eight would have been different. The petitioner
    has failed to show that his theory of juror nonunanimity
    was anything more than speculative and, thus, has not
    undermined confidence in the outcome. We, therefore,
    conclude that the habeas court did not improperly con-
    clude that the petitioner’s claim of ineffective assistance
    of trial counsel fails on the prejudice prong of the Strick-
    land test. Accordingly, we affirm the judgment of the
    habeas court.
    The judgment is affirmed.
    In this opinion the other judges concurred.
    1
    The habeas court subsequently granted certification to appeal from the
    judgment pursuant to General Statutes § 52-470 (b).
    2
    As summarized in its closing argument before the jury, the state theorized
    that the sexual assaults occurred as follows: ‘‘[The victim] told you that
    after James Mitchell forced her to engage in sexual intercourse, this [peti-
    tioner] was sitting there holding a shotgun basically between his legs while
    he relaxed on the backseat of the car and watched James Mitchell force
    her . . . to engage in penile-vaginal intercourse. . . . [The victim] told you
    that while she had a shotgun pointed at her head she did put her mouth
    once, twice down on [the petitioner’s] penis. . . . [The petitioner] did not
    ejaculate, but . . . he then gave the shotgun over to Mr. Mitchell, and
    [the petitioner] then attempted to have penile-vaginal intercourse with [the
    victim]. In fact, he did place his penis . . . into her vagina briefly.’’
    3
    See Pinkerton v. United States, 
    328 U.S. 640
    , 647–48, 
    66 S. Ct. 180
    , 
    90 L. Ed. 1489
    (1946).
    4
    In the petitioner’s direct appeal, our Supreme Court commented on this
    aspect of the court’s instructions as follows: ‘‘During the charging confer-
    ence, the [petitioner], the state and the trial court discussed that, specifically
    as to count eight, the [petitioner] was charged and could be found liable
    as a principal, as an accessory, or under the Pinkerton doctrine of vicarious
    liability. . . . The trial court thus charged the jury in accordance with this
    discussion. This, however, was incorrect. Count eight of the information
    alleged only that the [petitioner] had acted as an accessory by aiding Mitchell
    in sexually assaulting the victim. Accordingly, the trial court’s jury instruc-
    tion as to count eight was inconsistent with the crime charged in the informa-
    tion. Although [t]he trial court cannot by its instruction change the nature
    of the crime charged in the information . . . it is significant that neither
    the state nor the [petitioner] took exception to this instruction at trial, and
    that, on appeal, the [petitioner] has not challenged this specific aspect of
    the instruction. We therefore treat this claim as abandoned.’’ (Citations
    omitted; emphasis altered; internal quotation marks omitted.) State v. Hamp-
    
    ton, supra
    , 
    293 Conn. 446
    n.9.
    5
    See Miranda v. Arizona, 
    384 U.S. 436
    , 478–79, 
    86 S. Ct. 1602
    , 
    16 L. Ed. 2d
    694 (1966).
    6
    With regard to this claim, the petitioner challenged the verdicts on both
    of the sexual assault charges, counts seven and eight. Because he was
    acquitted of the sexual assault charged in count seven of the information,
    however, our Supreme Court stated that he was not aggrieved by that
    verdict, and, thus, it reviewed this claim only as it applied to the petitioner’s
    conviction on count eight. State v. Hamp
    ton, supra
    , 
    293 Conn. 444
    –45 n.7.
    7
    The amended petition also included a second claim of ineffective assis-
    tance of trial counsel for ‘‘failure to impeach and/or cross-examine [the]
    victim with prior trial testimony.’’ That claim, however, was withdrawn prior
    to the start of evidence at the habeas trial.
    8
    See footnote 4 of this opinion.
    9
    It should be noted that the petitioner does not contend that his claim
    of ineffective assistance of trial counsel arose from O’Brien’s failure to
    request a unanimity charge with respect to the underlying factual basis for
    count seven. More specifically, he does not claim that the possible lack of
    unanimity on count eight was due to the fact that the jurors should have
    been instructed that they could convict the petitioner of count seven only
    if they unanimously agreed that he personally committed a sexual assault
    against the victim by forcing her to perform fellatio or if they unanimously
    agreed that he personally committed the assault by forcing her to engage
    in vaginal intercourse.
    Pursuant to State v. Famiglietti, 
    219 Conn. 605
    , 619–20, 
    595 A.2d 306
    (1991), ‘‘[e]ven if the instructions at trial can be read to have sanctioned
    such a nonunanimous verdict . . . we will remand for a new trial only if
    (1) there is a conceptual distinction between the alternative acts with which
    the defendant has been charged, and (2) the state has presented evidence
    to support each alternative act with which the defendant has been charged.’’
    (Internal quotation marks omitted.) State v. Jessie L. C., 
    148 Conn. App. 216
    , 232, 
    84 A.3d 936
    , cert. denied, 
    311 Conn. 937
    , 
    88 A.3d 551
    (2014).
    Significantly, ‘‘case law provides that the alternative means of performing
    sexual intercourse are not conceptually distinct. See State v. Anderson, 
    211 Conn. 18
    , 35, 
    557 A.2d 917
    (1989) (‘[t]he several ways in which sexual
    intercourse may be committed under General Statutes § 53a-65 [2] are only
    one conceptual offense’).’’ (Emphasis added.) State v. Griffin, 97 Conn.
    App. 169, 184 n.7, 
    903 A.2d 253
    , cert. denied, 
    280 Conn. 925
    , 
    908 A.2d 1088
    (2006). Thus, this court held in Griffin that ‘‘the court’s instruction that
    sexual intercourse included vaginal intercourse or cunnilingus did not consti-
    tute a nonunanimous instruction of two conceptually distinct alternatives.’’
    (Emphasis in original.) 
    Id. Likewise, in
    the present case, the petitioner could
    not have prevailed on a claim that his counsel was deficient for failing to
    request a unanimity instruction as to whether the act of sexual intercourse
    underlying count seven was fellatio or vaginal intercourse, because the
    two acts are not two conceptually distinct alternatives for purposes of
    surmounting the first prong of Famiglietti.
    10
    ‘‘[T]he United States Supreme Court has explained that [t]o uphold a
    conviction on a charge that was neither alleged in an [information] nor
    presented to a jury at trial offends the most basic notions of due process.
    Few constitutional principles are more firmly established than a defendant’s
    right to be heard on the specific charges of which he is accused. . . .
    Reviewing courts, therefore, cannot affirm a criminal conviction based on
    a theory of guilt that was never presented to the jury in the underlying trial.
    . . . To rule otherwise would permit trial by ambuscade. . . . Whether a
    defendant has received constitutionally sufficient notice of the charges of
    which he was convicted may be determined by a review of the relevant
    charging document, the theory on which the case was tried and submitted
    to the jury, and the trial court’s jury instructions regarding the charges.’’
    (Citations omitted; internal quotation marks omitted.) State v. King, 
    321 Conn. 135
    , 148–50, 
    136 A.3d 1210
    (2016).
    11
    We note that the petitioner does not argue that his counsel’s deficient
    performance or the court’s instructional error was structural in nature and
    that he, therefore, is excused from demonstrating prejudice under the sixth
    amendment to prevail on his claim. ‘‘Structural [error] cases defy analysis
    by harmless error standard because the entire conduct of the trial, from
    beginning to end, is obviously affected . . . . These cases contain a defect
    affecting the framework within which the trial proceeds, rather than simply
    an error in the trial process itself . . . . Such errors infect the entire trial
    process . . . and necessarily render a trial fundamentally unfair . . . . Put
    another way, these errors deprive defendants of basic protections without
    which a criminal trial cannot reliably serve its function as a vehicle for
    determination of guilt or innocence . . . and no criminal punishment may
    be regarded as fundamentally unfair.’’ (Internal quotation marks omitted.)
    Taylor v. Commissioner of Correction, 
    324 Conn. 631
    , 645, 
    153 A.3d 1264
    (2017). Because the petitioner does not make this assertion in his brief or
    cite to any structural error cases, he has the burden of demonstrating that
    prejudice resulted from his trial counsel’s deficient performance in failing
    to object to the court’s instructions on count eight.
    12
    Our Supreme Court expressly has held, as a general matter, that principal
    and accessorial liability are not conceptually distinct from each other, and,
    thus, a jury verdict on a particular count should be regarded as unanimous
    even if some jurors concluded that the defendant was an aider and abetter,
    while other jurors concluded that he was the principal. State v. Smith, 
    212 Conn. 593
    , 605, 
    563 A.2d 671
    (1989). In the present case, however, the state
    did not allege the occurrence of merely one act of sexual assault for which
    it would have been proper for half the jurors to believe the petitioner was
    guilty under a theory of principal liability and half the jurors to believe
    he was guilty under a theory of accessorial liability; rather, it alleged the
    occurrence of three separate acts of sexual assault. The petitioner thus
    appears to argue that, given the instructions on count eight, the jury could
    have believed it proper for each juror to individually determine that any
    one of the three acts of sexual assault, two alleging principal liability and
    one alleging accessorial liability, was proven beyond a reasonable doubt,
    resulting in a nonunanimous guilty verdict.
    13
    By so concluding, we do not mean to suggest or presume that the jury
    must have decided counts seven and eight in any particular order. The
    reality, however, is that, ultimately, the jury acquitted him of the two acts
    of sexual assault of which the state accused him as a principal, and found
    him guilty on count eight.
    14
    Specifically, the prosecutor stated: ‘‘[L]et me go to count eight because
    we’re going to talk about some of these things together. . . . We’re charging
    him . . . that he aided, that he helped Mr. Mitchell in engaging in sexual
    intercourse with [the victim]. . . . The question for you is, looking at the
    facts here, did James Mitchell force [the victim] to engage in sexual inter-
    course when a shotgun was pointed at her and he told her to take off her
    clothes? . . . I submit to you that the [petitioner] had the gun when James
    Mitchell forced her to bend over and he placed his penis into her vagina
    . . . .’’