I'm just going to complain a bit about the decision to not pick up a Big Fat Guy (BFG) at some point as a backup DT.
Big Bill going down was definitely about the worst case scenario for the Bears' defense, and there is absolutely nothing to replace him behind him. Billings is officially playing at 310lbs. I'd be shocked if he's actually below 330lbs. He's straight up difficult to move. Pickens is 300lbs. Chris Williams is 300lbs. Byron Coward is 300lbs. All three are taller than Billings. None qualify as a BFG, and all of them are really just backup 3Ts.
Why not just pick up an adequate BFG in case this exact thing happened? NTs and 1Ts are extremely cheap, whether in FA, draft, or in trades. Even if this didn't happen, the team still falls apart against the run when Billings isn't in there because Cowart, Pickens, and Williams just get moved off their spots.