The Bills have a large fan following/contingent in southern Ontario since the 1970's and its likely picked up steam now that they've been a successful, perennial playoff contender since 2017 and that's attracted more fans in the Toronto area who saw the Bills a number of exhibition/regular-season games from 2008-2014 in Rogers Centre but while they tended to have large crowds, 12-13 years ago, Buffalo was a bit of a middling, middle-of-the-road WC team at best and not a realistic SB contender like they are currently. Any Saints/Bills game in the Rogers Centre would bring in a much bigger, sellout crowd that what they saw a dozen years ago.