Bolded: that we know about.
And when you say "coached", the more correct thing is "called the plays". Agree that, as far as the public knows, that was just the bowl game against Auburn.
However, Simon (and Callahan, and the whole offensive staff for that matter) are always integral, every year, every week, in forming the game plan. The OC doesn't go off into a cave, have a fever dream, and emerge with the game plan.
In 2021, the offense suddenly got much better starting with the Iowa game.
In 2022, the offense suddenly got much better in the Wisconsin game.
A person, me in particular perhaps, will draw the conclusions that they want to make. I won't ask you to entertain them in the slightest, but hey, it's a free, anonymous, internet message board. YMMV