Yeh it's like Jack's playing a different opponent in the second set. Commentary keep making references to the Wimbledon final between Carlos and Djoko where C also lost the first set 6-1.
The double bounce at 1-1 in the third set will be talked about. Alcaraz seemed to concede but if he didnt, Im not sure it went the right way. However, despite that he played very well in the 3rd set and deserved it in the end.