I think so. I didn't DVR the game, so I can't confirm. But, from what I recall the defense stunted and Levitre missed Harrison, Bell rode his guy out of the play. So, I'd say Levitre missed the block, not Bell. But, I can't recall if there was a RB that could have picked up the outside guy meaning Bell should have stayed on Harrison more. Even still, if that's the only play in question, I'd say it was a good game against a tough team.
How long has it been since we could say that neither the Oline nor the QB are the reason we lost the game (and there's no tougher test than facing the Steelers defense)?