Right now the Sunday night game for week 11 is the Chiefs at the Chargers. I can't see the NFL or NBC wanting the 3rd and 4th place AFC west teams playing in the showcase game. The two choices that I see are Green Bay at Minnesota or the Bengals at the Cardinals. The obvious choice would seem to be Green Bay and Minnesota considering the draw of those two teams is significantly more than Arizona and Cincinnati and the Cardinals are playing at Seattle the previous Sunday night and hell may have to freeze over before the NFL has the Cards in the prime time slot two weeks in a row.
But Green Bay is playing on Thursday the next week and a Sunday night game would make a short week even shorter and the Bengals only Sunday night game is against the Niners and that game late in the season will probably be less appealing than many others. So we may see the Cards play on Sunday night for two weeks in a row or the NFL could just decide that the Chargers and the Chiefs isn't so bad after all.
But Green Bay is playing on Thursday the next week and a Sunday night game would make a short week even shorter and the Bengals only Sunday night game is against the Niners and that game late in the season will probably be less appealing than many others. So we may see the Cards play on Sunday night for two weeks in a row or the NFL could just decide that the Chargers and the Chiefs isn't so bad after all.