The Kansas City Chiefs’ 32-29 win Sunday over the Buffalo Bills was the most-watched AFC Championship game in history with 57.4 million viewers on CBS, according to multiple reports.That eclipsed the 55.5 million set the previous year for the Chiefs’ 17-10 victory against the Baltimore Ravens. It also made it the most-watched AFC title game since the late 1980s advent of Nielsen’s People Meter measurement system, according to Front Office Sports.It was the highest number for any AFC or NFC title game since the New York Giants’ 20-17 triumph against the San Francisco 49ers had an audience of 57.6 million on Jan. 22, 2012.Sunday’s NFC Championship on FOX, played in the earlier broadcast slot, averaged 44.2 million viewers to see the Philadelphia Eagles roll to a 55-23 win over the Washington Commanders.