Thanks for all this - can I ask what the OW lounges (AA/CX/BA) are like in YVR, and what time they open in the morning?

I feel the thing that will let this happen is that I am at JFK and YVR at hours when there is very little happening.

But it is the 1hr45 at JFK that worries me.

I guess an hour in "secondary" would be an interesting experience - I've never had anything like that in hundreds of international arrivals.