Galen Fott just sent me this…
I enjoyed your obit on Carol Channing. In the summer of 1984, I saw Channing in Houston in Jerry's Girls, a revue of Jerry Herman's music. (Her costars were Leslie Uggams and Andrea McArdle.) So I'm guessing that's the event Channing was plugging on the same TV show you were on.
…and I'll bet Galen Fott is right. In fact, I'm pretty sure of it. Thanks, Galen!