Historically, UGA didn't play Tenn that often, then the SEC East came about. Now it's gone. Alabama has been in infrequent opponent also. I know "back in the day", SEC schedules were ... weird. Georgia Tech never played Mississippi teams, for example. I guess teams could pick and choose.
I recall 1979 I think it was that UGA played four ACC teams, and lost all four, but managed to win every conference game with Auburn coming to town, and a win there would secure a conference title at 6-5. Auburn spared them that indignity.
Auburn and UGA have a history of "upsetting" each others great seasons, 1942, 1971, etc.