(A) During trial. If for any reason the judge before whom a jury trial has commenced is unable to proceed with the trial, another judge designated by the administrative judge, or in the case of a single-judge division by the chief justice of the supreme court, may proceed with and finish the trial upon certifying in the record that he has familiarized himself with the record of the trial; but if such other judge is satisfied that he cannot adequately familiarize himself with the record, he may in his discretion grant a new trial.(B) If for any reason the judge before whom an action has been tried is unable to perform the duties to be performed by the court after a verdict is returned or findings of fact and conclusions of law are filed, another judge designated by the administrative judge, or in the case of a single-judge division by the Chief Justice of the Supreme Court, may perform those duties; but if such other judge is satisfied that he cannot perform those duties, he may in his discretion grant a new trial.
