Kelly and Day are essentially the same? Yes, Day is part of the Kelly coaching tree, obviously but I think there are some pretty stark differences between the kind of offense Day likes to run (see Ohio State 2019-2023) and the offenses Kelly traditionally prefers to run.
Between the Michigan game plan being absolutely opposite of what we've done every other game and what Chip has historically done on offense everywhere he's been, I don't believe the game plan for Michigan was Chip's doing. The adjustments typically made between the first and second half (which usually resulted in lots of scoring) for every other game this season was 100% gone on Saturday too. The last drive of the 1st half made me think some adjustments were made early...but when we came out in the second half and just ran it right at them, I was dumbfounded.
So I think either Day overrode Chip's gameplan before the game or he commandeered playcalling at some point on Saturday. The way we came out the first few drives, I'm pretty sure it was the former.
But still, why nothing changed at half-time, I have no idea. Yeah, it was windy. Yeah, Howard was knocked silly in the first half and that may have had an effect...but Chip made his career with an option offense that uses misdirection, perimeter running plays and gameplanning around an undersized OL. Running it right at the best interior DL in the country with a MacGuyvered offensive line is probably the least Chip Kelly thing possiboe. Outside of maybe suddenly running an Air Raid offense.
But once again, the assistant coaches and coordinators are taking all the heat when there's been one common denominator.