Originally Posted by
songsc
I have not done it at YYZ. But generally speaking, yes. I assume your friend is doing YYC-YYZ-AMS all on AC, if so then there is no need to pick up or re-check the bags at YYZ. The YYZ-AMS boarding pass will allow your friend to re-enter security at YYZ.
Thank you; yes, its all AC (YYC-YYZ-AMS).