Kelce jumped into Mahomes' postgame interview to declare Arrowhead Stadium "Mahomes' House" after Bengals fans called it 'Burrowhead'.
The Bengals made the most of an out-of-sorts Patrick Mahomes to reach the Super Bowl last year, but a brave display secured revenge.
Brock Purdy was forced off with an elbow injury but the San Francisco 49ers remained confident of a comeback victory against the Eagles.
The San Francisco 49ers saw quarterback duo Brock Purdy and Josh Johnson both suffer injuries in the loss to the Philadelphia Eagles.