Thanks, ginge. I didn't know how much Rad knew about past events, how serious his/her questions were and so on, so I thought a polite, short reply would do.
Maybe it's because I'm only an occasional solver of the Listener,that I find some aspects surrounding it to be fascinating - the 'perfect attendance' the 'gosh, am I really the first …' questions, the almost forensic scrutiny of clues.