Thank you for the question.
Indeed, there are completely separate processes depending on where the event is. I like to say just half-jokingly that I'm the chief of protocol of Canada everywhere except here, with the possible exception of the PM's corridor upstairs.
The parliamentary guest list was completely separate from us.
Sometimes we feed into those. They'll ask us who to invite from the diplomatic corps to one address or another or to liaise with the visiting delegation on who from the delegation should be invited if not everybody can be invited. However, at no point—