Originally Posted by rankourabu

You never know, it may work, stranger things have happened, just spoonfeed the flights, and see if it can be validated, dont get discouraged, and try a couple times is the response is negative

the A/P site allows you to book AC flights now 355 days out.
Most partners release inventory 330 days out. You need partners to to HKG-Europe-YYT. Try to avoid Air Canada as much as possible, two transatlantic legs and your domestic will set you back about $450 per ticket.