This is great stuff...nice find, none! Previously I've only ever found one comment, in print and not video, by Bea Arthur about the Holiday Special. I even contacted her agent while she was still alive about an interview, which she declined. Now that she's gone I didn't hold any hope of ever seeinng anything more by her on the subject.
The interviewer here is really confused. She's trying to ask about a rumored (and apparently debunked) appearance by Bea Arthur in a Star Trek episode under the pseudonym "Jane Ross":
http://memory-alpha.org/wiki/Jane_Ross
Since this never happened (it was a completely different actress), Bea understandably doesn't know what the interviewer is talking about, and assumes she means her appearance in the Holiday Special...which she then goes on to comment about. The interviewer probably doesn't know about the Holiday Special, and continues to unsuccussfully push the Star Trek angle.
--SKot