Kansas City’s Week 1 rushing output also changes the way Patrick Mahomes' return is read. Mahomes threw for 184 yards with two touchdowns and an interception against Denver, but the Chiefs did not need him to carry every down when Walker and the run game were creating efficient second downs. Indianapolis must decide how much safety help to devote to Mahomes without opening the interior run lanes the Chiefs showed they can exploit.
The Colts' clearest path is to make the game about down-to-down execution. A cleaner alignment call, a successful first tackle and a third-down stop would each answer a question raised by Week 1. If Indianapolis cannot make those fixes, the Chiefs' run volume can shorten the game and leave the Colts chasing the score.
The Sunday Night Football kickoff is 8:20 p.m. ET at Arrowhead. The official preview, injury update and team video all point to the same decisive theme: Indianapolis has to communicate and tackle well enough to force Kansas City back into a less comfortable script.