That has been my conspiracy theory, plays were sent from play caller, in this case Bevell to a speaker in QB's helmet. What play relayed to teammates in the hurdle, the OC has no idea or control. The headset is one way, only to listen, with no mic, and it's switched off 15 seconds left on the play call.
The story was that once Wilson called the play in the huddle, teammates suggested an audible to change the play, but Wilson refused. After the INT, Pete immediately took responsibility, Did Pete took responsibility because he approved the play, or to protect his new found franchise QB? Something only known to Pete, Bevell, and Russ.