Frankly, I don't think anything in this performance is live. Daltrey even misses his scream at 03:06 and Moonie isn't in sync with the ending of the song either.
No, all mimed to the kitchen-scissors single edit of Won't get Fooled.
The ZZ Top clip is weird because they almost look unsteady and unstuck. Dusty and Billy are turned to face the video screen and at one point Billy appears to try and slow the tempo a fraction, while facing the drummer.
Thanks to YouTube I've seen clips of what modern musicians hear onstage through IEMs, and it is a constant ticking click track for each song with audio cues like "...and fill in three, two, one" to ruthlessly keep bands in sync with visual and lighting cues.
Both my current bands have found keeping drummers impossible. Add a few babies along the way and we now mostly play acoustically. Recording this stuff to a 'grid' is really tricky as we add so much variance to the tempo of things. Learning the flute has been difficult for me as I'm so used to playing bass 'on the one' rather than shaping tempo to fit phrasing, etc.