From what I can recall they showed a weekly highlights show only back then with only the Superbowl being shown live...that was the year of the Bears, iirc. the previous season they had shown the "Riggins Superbowl" game live.
Yeah, I guess this one would have been like three years before the Bears won the Super Bowl - no, four - but they were in the mix for a while. This Dolphins-Chargers game was the year the Niners won their first. The Chargers beat the Dolphins in OT, then went to Cincinnati, where it was freezing cold - it stifled the Chargers' high-octane passing game and the Bengals made it to the Super Bowl, where they lost to Ronnie Lott and Joe Montana and Dwight Fucking Clark, whose perfectly ordinary "Catch" in the NFC finals against Dallas has been celebrated ever since for no reason
You should try and find a Youtube of that Chargers-Dolphins game if you can - it was extraordinary. Blocked kicks, a perfectly executed hook-and-ladder. Totally fucking great.
https://www.youtube.com/v/1ICT-EkKlt0