I think the Bills will be primetime next week - IMO Josh vs Burrow/Mahomes will be too tempting for the networks to see it play out during the afternoon, especially considering how Josh played yesterday.
If it’s right that the Cardinals/Rams will play on Sunday then I imagine, for fairness, the conferences will play on the same day, so the game at Tennessee will be played Saturday afternoon followed by the Bills match up. If seeds 2-4 win in the NFC then I expect Rams at Packers to be the afternoon game on Sunday with Cowboys at the Bucs in the evening.