I put this together for those interested in IQ, Pocket Presence, Progressions, and Windows.
The defense knows WV needs 5 yards for a first down, and they apply the correct formation to defend it.
Geno goes through his progressions and finds the open receiver anyway.
Cassel would've looked right at Bowe and just waited for him to get to his break in that crossing pattern. (granted, I don't recall if the chiefs have ever ran a 5 wr set)