contestants were founding members of the AFL. The Dallas Cowboys' Super Bowl XII victory over the Denver Broncos was their second such win of the 1970s, having previously beaten the Miami Dolphins in Super Bowl VI (1971-72 NFL Playoffs). In each case, Dallas' AFC opponent had scored back-to-back playoff wins over the previous two Super Bowl Champions, Denver having defeated Pittsburgh (X) and Oakland (XI), and Miami having defeated Kansas City (IV) and Baltimore (V) This game marks the only time in NFL history that a referee, Jim Tunney, worked in consecutive Super Bowls. No teams in the Eastern Time Zone were in either conference championship game. This would not happen again until the 2019 NFL Season. References Total Football: The Official Encyclopedia of the National Football League () The Sporting News Complete Super Bowl Book 1995 () National Football League playoffs Playoffs Los Angeles Rams postseason