well it will either be the bengals or the colts or the broncos.
if the bengals (currently 4-6) end up with the 7 seed and the chiefs get the 2 seed, they will have finished 6-1 and the chiefs will have finished 5-4. chiefs would be favored by less than a field goal at home in that scenario.
OR the chiefs could get the 1 seed and advance directly to the divisional round.