The very first "AFL/NFL Championship Game", later called the Super Bowl, actually aired on two separate television networks. Since CBS had the rights to show the NFL and NBC had the rights to the AFL, they decided to air competing telecasts. Not much footage exists of the original game since neither network saw the importance of preserving it.
While the NFL's Green Bay Packers won the game, the AFL's network- NBC, won the ratings war, easily beating CBS.