Correct there are many suspicious things. Unfortunately there’s also many lies like this claim that they were live streaming the event which they weren’t.

They cut to it live after the shooting happened. News media has people at events all the time so they can film and report on it. If something like this happens they can cut to it live because the people are already there filming.

CNN and many others film everything trump says so then if he says something they don’t like, they play it on loop for their viewers. It’s completely normal