The film - which is narrated by Academy Award winner Regina King and was co-executive produced by Goodell, Haddon and 11-time Emmy Award winner Bill McCullough – debuted on Sunday and will be re-aired by ABC on Sept. 1 at 2:30 CT. It will also be available through ESPN authenticated Video on Demand until Sept. 15 before moving to the ESPN+ streaming platform.

It's an opportunity for both the most-devoted of football fans and those new to the game alike to learn something new about this country's most popular sport through the unique perspective of those that have truly embodied it.

"What they all share is the passion and commitment to the game of football, to the players and to the fans. I knew they loved football, but I didn't know how deep that love was," Goodell said. "They take this very seriously and all four of them told me multiple times that they do not take this for granted…Ultimately, I think that's why they wanted to share this."

And there are still pages to this story that have yet to be written. That includes another trip to the Super Bowl for Norma this February, and hopefully, her Chiefs will be playing in the game.

"I think it would be a very fitting end to a documentary titled, 'A Lifetime of Sundays,' because that's truly what it's been for her and our family," said Clark Hunt when asked what a Chiefs' trip to the Super Bowl would mean to Norma. "Nobody wants to get back to a Super Bowl and win a championship for our great fans more than my mother. To do it during the 100th anniversary of the NFL, the 60th anniversary of the Chiefs and the 50th anniversary of our Super Bowl IV win, you couldn't have a better ending to the story than that."