Pittsburgh sounds different when the Steelers are a legitimate Super Bowl contender. There is an energy in the air that is hard to describe. There's a buzz inside the stadium on game days that reaches a crescendo when "Renegade" is played at some point during the fourth quarter.

The Chiefs face the Steelers in Pittsburgh on Christmas Day. We break down what the game means for the NFL playoff picture.

It has finally happened: Netflix now has live football. Announced earlier this year, Christmas Day marks the beginning of the NFL's expansion onto the popular streaming service, with two games on tap for this year: the Chiefs and Steelers in the opener at 1 p.m. ET, followed by the Ravens and Texans in the day's second game at 4:30 p.m. ET.