NFL ownership passes 'Thursday Night Football' flex rule
How It's Made: Anatomy of the NFL Schedule
Patriots-Steelers regular-season game could change after new NFL rule – Boston Herald
NFL approves flex scheduling for 'Thursday Night Football'
Rule To Allow Flexing Of Thursday Night Football Games Passes - Steelers Depot
Flex scheduling expanded in 2023 NFL schedule
What Is 'Flex Scheduling' for NFL's Thursday Night Football? – NBC Chicago
Prime's 'Thursday Night Football' is back. Will it be better? - Los Angeles Times
11 Things You Forgot About the 2023 N.F.L. Season - The New York Times