FILE - Kansas City Chiefs quarterback Chad Henne, right, chats with quarterback Patrick Mahomes (15) before an NFL preseason football game against the Green Bay Packers in Kansas City, Mo., in this Thursday, Aug. 30, 2018, file photo. If Patrick Mahomes is unable to play in the AFC title game following his concussion, the Chiefs have the utmost confidence in Chad Henne. After all, the 35-year-old journeyman already proved he could rise to the occasion on Sunday, helping Kansas City hold off the Cleveland Browns in the divisional round of the playoffs. (AP Photo/Charlie Riedel, FIle)