If DALLAS wins, they clinch the tiebreaker over GB. So, as a plan B, at 11-5:
PHIL 11-5 wins division
DAL 11-5
DET 11-5 WINS DIVISION
GB 11-5
AZ 12-4
SEA 11-5
Green Bay loses out. SEA get #5 due to CONF. DAL get #6. But this assumes ones of the DAL wins is vs. PHIL (that is a common game with GB).
If DALLAS loses to PHILLY, GB gets the tiebreaker over DALLAS. Common games would end in tie ... and GB has dominant lead in SOV.
what I just said isn’t entirely true.
It works if the 11th GB win is over BUFF (non-conf), not TB or DET.
It also works if the 11th DAL win is over WASH (conf), but not INDY (non-conf).
Either one of those ways is good enough to get DALLAS into WC over GB at 11-5.