NFL Week 13

Yes I know this is a little early but I realized something. Assuming that New Orleans, Kansas City and Denver all win this coming week, then the next week we will have the following situations:
New Orleans at Seattle - Seattle wins and they are the NFC #1 seed by record and if New Orleans wins they are the NFC #1 seed by tiebreak.
Denver at Kansas City - Kansas City wins and they are AFC #1 seed by record and if Denver wins they are AFC #1 seed by tiebreak.

Have we ever had the situation where both #1 seeds were being played for on the same day? Is it fair to say that so late in the season and with all four teams remaining schedules that a week from Sunday determines the #1 seeds for the playoffs?

The Ravens first came up against Ed Reed in Week 3 at home against Houston. With inspired play they handed the Texans their first loss, 30 - 9. Now they see him again w/ the Jets and again are at home where they’re 3-1-0. Jets are 1-4-0 on the road. Actually, both teams have 1 road win and 1 home loss.

This is early, going to 12.