My sister is going to be flying through YYZ en route to ICN with a rather brutal wait (6 hours) between flights. She has a lounge pass, courtesy of her brother, and is wondering if she can use it in the domestic lounge after arriving from her first flight, then carry on to international departures closer to boarding time. Obviously she can't use it in the international MLL. Seems reasonable to me, but I never encountered the question. Anyone know?