https://buffalonews.com/entertainment/television/alan-pergament-bills-rating-impressive-despite-drop-from-opener-daryl-johnston-is-sundays-analyst/article_e0d1fd78-1ba5-11ec-85ab-f39d20fbf0ee.html
As difficult as this crap writing is to read/follow, my interpretation is that Millen is normally a college coverage guy ...
"A week after having announcers who normally work college games, Brandon Gaudin and Matt Millen, work the Bills game, Fox is sending a NFL crew Sunday very familiar to Bills fans.
Daryl Johnston, the former Lewiston-Porter, Syracuse University and Dallas Cowboy star, is the analyst alongside play-by-play announcer Chris Myers. Jen Hale is the sideline reporter."