Seahawks win + Bears win = Seahawks #2 seed
Seahawks win + Panthers win = Seahawks #2 seed
Seahawks win + Bears win + Panthers win = Seahawks #1 seed
Bonus: Bears win + Cards win = Rams out of playoffs
Both are home Division games for the underdogs, so their chances are higher than might be expected.
Putting on my Seahawks goggles, I see:
Packers last 6 games include a road loss to the Colts, a single score road win against the Lions, and a single score home win against the Panthers. Not playing consistently excellent football.
Bears have 3 consecutive wins - a 29pt win against the Texans, a 6pt win against the Vikings, and a 24pt win against the Jags. No powerhouse teams but they're taking care of business.
Saints last 4 games include a 5pt win over the Falcons and 3pt losses to the Eagles and Chiefs. Not exactly on fire. In their home game against the Panthers they squeaked out a 27-24 win.
Panthers only have 2 wins in their last 5 games but their last game they played well, defeating WFT 20-13. Their 3 losses were all 1 score games to @Packers, Vikings, @Broncos. Their other win was a 20-0 drubbing of the Lions.
So I'm saying there's a chance!
Note: All games that have an affect on NFC seeding will be afternoon games, except Falcons at Bucs which only matters for seeding between Rams/Bucs (5/6 or 6/5 with Bears 7) if Rams defeat Cards.