Didn't watch lots of tournaments until now, but shouldn't those teams be in others rooms and not sit right in front of a big screen where they can see where the players of the other team are right now? That's why they sit in boxes at the TI, right?
On tournaments with stages such as Starladder, there's usually referees sitting behind the players so that the coaches/players don't use anything foul. They also have industrial noise cancelling earphones over their own personal earbuds. It's decent but the boxes are better, for sure.