Well Let's look week by week, starting after our bye:
Week 7
Our Game: Tampa Bay @ Buffalo
Current Sunday Night game: Atlanta @ New England
Likelihood: NONE - replay of SB51
Week 8
Our Game: Raiders @ Buffalo
Current Sunday Night game: Steelers @ Lions
Likelihood: little-to-none - both scheduled teams currently 3-1 (although this is the start of a 5 night-games in 6 weeks stretch for Pittsburgh)
Week 9
Our Game: Buffalo @ NY Jets
Current Sunday Night game: Oakland Raiders @ miami
Likelihood: NONE - our game is Thursday night, only Sunday Afternoon games can be flexed
Week 10
Our Game: Saints @ Buffalo
Current Sunday Night game: Patriots* @ Denver
Likelihood: NONE - Pats*/Broncos will always be in prime time
Week 11
Our Game: Buffalo @ LA Chargers
Current Sunday Night game: Eagles @ Dallas
Likelihood: NONE - another big rivalry game
Week 12
Our Game: Buffalo @ Chiefs
Current Sunday Night game: Packers @ Steelers
Likelihood: NONE - huge national following for both teams
Week 13
Our Game: Patriots* @ Buffalo
Current Sunday Night game: Eagles @ Seahawks
Likelihood: Possible but not likely
Week 14
Our Game: Colts @ Buffalo
Current Sunday Night game: Ravens @ Steelers
Likelihood: NONE - even if Ravens are out and they do flex, our game is uninteresting
Week 15
Our Game: dolphins @ Buffalo
Current Sunday Night game: Cowboys @ Raiders
Likelihood: little-to-none - other sunday 1PM games would probably be ahead of ours
Week 16
Our Game: Buffalo @ Patriots*
Current Monday afternoon game: Steelers @ Texans (no game Sunday night)
Likelihood: MAYBE
Week 17
Our Game: Buffalo @ dolphins
Current Sunday Night game: NONE
Likelihood: Don't even know if there is a Sunday Night game this week...