Bears-Raiders was protected by FOX, and Pats-Eagles was protected by CBS. So either Broncos-Chargers or Bills-Jets could have replaced Steelers-Chiefs.
IMO, there are two factors at play here:
1. The Jets, Bills and Chargers were ALL terrible in their respective last games, and all have the look of going in the wrong direction.
2. You usually can't go wrong with the Steelers when it comes to ratings. I think it was the safer bet to keep this game.
Bill, where do you find the protected game lists?