Thankyou, Jordan, Quisling and Candledave.
I had heard the term for the talks quite frequently but never really considered what they are or the online nature of them. I suppose these things take time to get into Chambers too.
The Hardy boys clue is, erm, unlikely to be parsed before solving. (Unless the solver is a big fan). 😄
Still, definitely a distinctly different feel to the whole crossword so, thanks Lionheart.