Probably knocked him down and then kept swinging until he got knocked senseless.
yep. that kind of puffiness ain't 2 hits. he wailed on him. and that's good. You see way too many fights where the good guy will have the upper hand, will hit the bad guy once or twice... and then give them a chance to recover.
you get the bad guy down, and you're 72, you need to keep hitting until he's unconscious. Twice over.