Watched late last night. The entire 3 hours.

Trump aced it. Grade: A-
Trump did great giving answers on Aliens, JFK assassination, personal one on one interaction. I wasn't interested in the MMA, but i understand that that aspect is core to Rogan's young guy audience, and great way to connect.
And to the sleazy left media and their compliant minions...... Trump lasted the full 3 hours, with no signs of the physical or mental fatigue, they blame his age on. That falacy was fully debunked.
I hate to go as far as saying this nailed it for Trump, but this by next week will be seen by a Billion people, and it really put Trump in a good light.