Originally Posted by
Eastbay1K
I think AC currently uses both A and G gates. If there's an A gate arrival, it will require a short walk through the international terminal and then through G gate security.
I saw that, but lately the Vancouver flights have been arriving in G. I'm guessing that's deliberate, as much of the Vancouver passenger traffic is en route to Asia on a Star Alliance itinerary.
Like you say, though, it's no biggie if the OP's mom arrives in A and needs to walk across International to G.