Bay of Plenty couldn't capitalise, with Hickey adding another penalty to extend Auckland's lead before the big tighthead prop returned.
Leading 23-0 at halftime, Auckland continued to run riot in the second spell.
Centre Vince Aso broke through to score after three minutes, then fullback Melani Nanai added the bonus try 10 minutes later.
Ahead 38-0 with 20 minutes remaining, Auckland lost a little direction and Bay of Plenty pounced.
Henry Stowers powered over on the pick and go from close range, then Thomas Franklin added a second with similar strong work close to the ruck.
No.8 Jesse Parete's 77th minute try introduced some respectability to the scoreline but Bay of Plenty ultimately paid the price for an error-laden performance.