It seemed to me that the camera was on Trump almost constantly toward the end as she was blathering on with her lies and rehearsed talking points.
Maybe they were just hoping to catch a Trump meltdown (which never happened), or maybe they were deliberately trying to hide Hillary's neurological issues.
We watched it on CNNJ - CNN Japan, and the entire broadcast was a split-screen view with Donald on the left and Hillary on the right. There was never even one cut-away from that split-screen view the entire time they were on stage, so I could carefully watch and see her plastic politician smile, sickening laughs, tired face, dropping eyelids and googly eyes bouncing around during the last 25 minutes or so.