Old (Brady), young (Mahomes), different Super Bowl 55 awaits

Tampa Bay Buccaneers quarterback Tom Brady reacts after winning the NFC championship NFL football game against the Green Bay Packers in Green Bay, Wis., Sunday, Jan. 24, 2021. The Buccaneers defeated the Packers 31-26 to advance to the Super Bowl. (AP Photo/Matt Ludtke)

Kansas City Chiefs quarterback Patrick Mahomes is pressured by Buffalo Bills defensive end Jerry Hughes (55) while throwing a pass during the first half of the AFC championship NFL football game, Sunday, Jan. 24, 2021, in Kansas City, Mo. (AP Photo/Jeff Roberson)

Tampa Bay Buccaneers head coach Bruce Arians holds the championship trophy after winning the NFC championship NFL football game against the Green Bay Packers in Green Bay, Wis., Sunday, Jan. 24, 2021. The Buccaneers defeated the Packers 31-26 to advance to the Super Bowl. (AP Photo/Matt Ludtke)

Tampa Bay Buccaneers quarterback Tom Brady reacts after winning the NFC championship NFL football game against the Green Bay Packers in Green Bay, Wis., Sunday, Jan. 24, 2021. The Buccaneers defeated the Packers 31-26 to advance to the Super Bowl. (AP Photo/Jeffrey Phelps)

Kansas City Chiefs quarterback Patrick Mahomes (15) scrambles up field ahead of Buffalo Bills defensive end AJ Epenesa (57) during the first half of the AFC championship NFL football game, Sunday, Jan. 24, 2021, in Kansas City, Mo. (AP Photo/Jeff Roberson)