If you watch Bruno try to get up after the fight, he had jelly legs so he definitely got hurt by one of those punches. Whether he should have or not...well, I think we all know the answer to that one. White still doesn't have proper vision in his one eye, as the result of getting hit with a puck.
And to answer the announcer's question, Gervais got clocked with a jab. It looks like White hits him in the side of the melon with the hook then misses, but there is actually a quick jab between those two punches that is straight to the button.
White got hit in the eye with a puck a few years ago and suffered major eye trauma. In order to keep playing, he is required to wear the visor. He does not fight anymore, but Gervais wanted to go, so White had little choice. He ended it quickly. Also, the 5 minute boarding call against him looked to be a clean hit.