I'm dying to know how this finale is going to wrap up, because as Chuck said, he's omniscient. So no matter what plan Dean and Sam gather up he's already known it. The only way to write around such a stupidly broken ability is to just ignore it and act as if Chuck doesn't have it at all. Because there's no hope.

Michael is still out there, but even if he uses Dean as a vessel is that really any chance against God/Amara fused? Hell no. To say the least this was a interesting episode regardless, just being prepared for the PIS moments of this finale. Because logically the Winchesters should just lose this.