As per Sports Illustrated, "CBS got the Titans-Chief game started in spectacular fashion with video about what each team meant to its fans. The video featured a cool, slowed-down version of 'DON'T STOP BELIEVIN'" as sung by Jessica Carvo. CBS told me (author: Jimmy traina) that the producers of the video worked with the original Journey frontman, Steve Perry, on the revamped song."--published 1/20/2020
Seems Steve collaborated with Jessica the day SF won the final game.