If Boise ST. loses @ any time & Big Cats win out then you must qualify &
UNLV, BSU, ARMY, NAVY would all need to lose and be 10-2, behind WSU 11-1 for WSU to make CFP, IF BSU were to lose.
It's actually better for WSU making CFP wise for BSU to win out, go 11-1, to show that WSU's would be lone loss, if they win out, was, is a super ultra tough, understandable, super ultra quality, forgivable loss.
Then if Notre Dame loses, is 10-2, as a independent, a 11-1 WSU, 11-1 BSU would goto CFP over a 10-2 Notre Dame, 11-1, 10-2 UNLV, 11-1, 10-2 Army, Navy. BSU would get in because of highest rated conference champ, and WSU would get in as a at large taking Notre Dame's, UNLV, Army, Navy's spot.
But if BSU does not win out, then that path to CFP won't be available to WSU. That path to CFP, is better, easiest path, easier then if BSU were to lose.
If BSU loses, every team above WSU would have to lose 1,2 games and go 10-2, 9-3, for WSU to goto CFP.