Can a trial counsel render constitutionally performance and not prejudice the defense

QUESTION(S) PRESENTED , , Can a trial counsel render constitutionally performance and not prejudice the defense by (1) proceeding to the . . sentencing trial 45 minutes after the jury had returned its guilty verdict (2) without discussing any sentencing . trial strategy with client (3) without advising client . of his right to testify at the sentencing phase (4) without inquiring into whether client had a desire to testify : ; at sentencing trial (S)without presenting a single charec; ter witness (6) without inquiring into whether cliset had any character witnesses (7) without developing any mitigating evidence (8) without presenting any mitigating evidence and (9) without investigating clients background . . for potential mitigating evidence? : . Petitioner's answer is NO : : ii