A while back someone asked the question: how many connections can you get on a city pass?

Many replied that two segments with one connection was the maximum that they had experienced. For instance: YWG-YOW can be booked as YWG-YYZ-YOW or YWG-YUL can be booked YWG-YYZ-YUL.

I just was offered this itinerary while booking YWG-SEA and the computer offered me: YWG-YYC-YVR-SEA with two connections. It can be done.