You can't just play segments of a live talk show. Joining a talk show "in progress" is annoying as hell. I guess you could dedicate hours to different programming (like WDUN does on AM vs. FM), but that's about it.
That's not exactly what I was referring to.
It could be that the core programming is the same but that maybe with some of the less popular talk shows they only run the program on one and news on the other. Or it could also be that because of contracts UGA has with other affiliates, they can't run UGA games on FM.
It could also simply be that they think the dual frequency might be too complex and they will simply run an ID on AM that only mentions 750 and on FM they only mention 95.5.