Have we confirmed that the DL coaches are back? Or just haven't heard anything?

Kinda surprised the assistant DL coach isn't going with Hafley since he came with him from Boston College, and they coached on the 49ers together before that.


Who are the four DCs that called plays?

Also I think it's note worthy that the Bills head coach took over defensive play calling duties as they were not happy with their run defense, though they had a lot of injuries too.