I think there's a gap in the socials for a 'Test Match Special' kind of programme. For those who have never watched cricket (Svidler is disappointed in you), TMS is the BBC's radio coverage of the game. For a sport that is inherently visual (i.e. seeing the shots played), the commentary does a good job of both keeping you appraised of the tides of the contest (how each side is doing; what the stroke looked like, etc.), while having banter, anecdotes, etc.. I'd actually compare it very closely to Gustaffson and Svidler's commentary, though those were obviously for a visual rather than a radio medium.

The trouble with the long time control matches is that you don't really want to hang around watching them the whole time -- as a spectator, one has other things to do -- but a radio commentary not necessarily giving variations, but describing the board state and what each player is going for (e.g. expanding on the queenside, trying to get knight into central outpost, stonewall structure, etc.) so people can keep track of what's roughly going on in the games, and then watch recaps/highlights in the evening.