So one could take on average ~5 min per move. On any moves they want help with, they could wait out the 5 min and have an accomplice send the signal? Honestly

So one could take on average ~5 min per move. On any moves they want help with, they could wait out the 5 min and have an accomplice send the signal? Honestly, it does seem next to impossible to stop a dedicated cheater if any feedback makes it out of the room in a reasonable amount of time.