[When Hiro had yelled for Baymax to stop, he had paused for a brief second, comparing that instruction to his previous one. There was a discrepancy between the two, his first command was to destroy, the new one was to stop, they were completely incompatible with each other. After a moment, Baymax decided to continue on with the original order, he was programmed to fight, so destroying Callaghan was in line with his purpose.

He thundered on after the pair, as they darted off on their microbot-aided escape, the distance between them widened until Callaghan was no longer within his scanner's range.

This isn't a problem, it's happened before. Baymax continues on towards where he had last saw his target, stomping right past the sewer entrance several minutes after the two had gone down the manhole.

Baymax will keep on going in that direction until he cannot go any further. Without his assignment in sight, he'll go back to combing the city block by block. It didn't matter how long it would take, he'll keep hunting until he successfully eliminates Callaghan.]