As a regular attendee at Titans game over the past decade, I can tell you that it is a normal occurrence for 50% (or more) of the stadium to be rooting for the away team. Last time we played in Nashville, almost the entire upper deck level was Bills fans. Then we took over downtown after the game. I've seen this when the Titans play Green Bay, Pittsburgh, Minnesota, etc. For whatever reason the locals just don't seem to care much about the Titans. So, I don't think anyone will need to "find" the Bills fans per se!