That's not the way I heard it, but not interested in debating it.
It was stated by the staff and Stave this week. Here's an ESPN article that confirms it.
"(Stave) acknowledged that, as many had suspected, the issues began after Wisconsin named Tanner McEvoy as its starting quarterback around Aug. 20. Stave had performed well in the preseason, and many thought he would retain the top job ahead of McEvoy.