Could someone explain to me how the 'Red Zone' works.

Well, if there are more than one touchdowns at any given time, they will either: split the screen to show multiples or you see a delay until they have time to break down the next one. Pretty simple actually. We do have quite advanced technology nowadays :)

If you’re asking about the channel on tv called ‘red zone’ it’s a split screen thing showing them all at once. I used to wonder about that too. It’s usually split so small (like 6 ways?) you can’t see much anyway.