That was the one thing about radio, I just saw it as dialogue-driven but I never let the words lead the listener along. I rarely used dialogue to introduce another character or weave a visual gag. People would talk and if someone new entered the scene, they would just start talking. I think I started to realize with this bit that I had to walk the audience through the scene aurally.
Plus, I found myself writing almost a whole 'nother routine to set up this one as a radio bit. All the mentions of other radio shows were new for the lead-in. Rule of three and all that. And I got to play with sound effects again. But, as is often the case, the sketch leaned too heavily on TV shows and that may have doomed it. And, perhaps, the cast size. Also GK, who was old then, had just had a kid, and I made mention of it; which could have gone either way. Though the idea of GK describing an episode of the kiddie show Teletubbies would have been so funny.