Not so fast. I don't think Bishop could diagnose anything. He just saw a gap and shot it. It didn't matter if that was his assignment or that was where the play was going. I don't know how many times he shot the wrong gap and let the other team gash a 20+ yard run.
It wasn't until his last season or two that he slowed down and actually played his assignment and then the Packers could afford to put him in for extended periods.