Most popular chess tournaments have a live audience. So that would be another vector.
Any delay would have to be significant like 30min to avoid players just waiting for the broadcast to match the board state during a critical move where they wanted to cheat.
And then if you see the players exit the playing hall while the board is 30min behind, do you just fast forward broadcast the remaining moves? That kind of takes the drama out of the most interesting part of the game. Or do you just keep the feed on delay and ask the players not to indicate if they won/lost yet? I’m sure their body language would be obvious.
For any tournament where it matters, they're being paid as a form of entertainer/athlete. It's not ideal, but it's also not unreasonable to put restrictions like that on them. It's already reasonably common to have things like interviews afterwards.
Any delay would have to be significant like 30min to avoid players just waiting for the broadcast to match the board state during a critical move where they wanted to cheat.
And then if you see the players exit the playing hall while the board is 30min behind, do you just fast forward broadcast the remaining moves? That kind of takes the drama out of the most interesting part of the game. Or do you just keep the feed on delay and ask the players not to indicate if they won/lost yet? I’m sure their body language would be obvious.