Chung explained that good communication allows safeties to play “instinctively and fast”, so when safeties mesh, the back end of a defense becomes solidified.
“That’s your right-hand man,” he said. “You have to be able to communicate with just pointing, just eyes. It’s kind of like your brother, when you had fun with your brother, [saying] ‘Let’s do this prank’ and he knows what it is [before you mention it]. That’s how it is.
https://www.patspropaganda.com/chung-explained-that-good-communication-allows/