Let me answer the second question first, on the chair asking questions.
This is a hybrid committee, so there are different rules. I actually consulted with the clerk, who is the legal expert on this. Yes, the chair has the prerogative to, at times, ask questions. Certainly, if you're in the House of Commons and you've been in certain committees, certain chairs frequently do so. John McKay almost always asks a brief question at the end. I do not believe it is out of order to do so.