@Hapless Bills FanIt's 2021 there should be a way you can isolate a coach and give him game feed.
Seems like a no-brainer.
If there was some crazy interference like the Patriots & Ernie Adams are known for, then the assistant makes the call.
I think Buffalo is very lucky in that we have Leslie Frazier, and I will even throw Brian Daboll in there, as seemless transition if needed.