Hi all
Is there a limit to the number of sectors you can upgrade with a single SWU, provided there is nothing that qualifies as a "stopover" in between them? As part of a RTW we're flying JFK-YVR-YYJ-YVR-SYD all on one day, with just under 4 hours in YYJ (the YYR-YYJ-YVR segments are on AC Jazz Dash-8 with no business class). Should we be able to upgrade JFK-YVR-SYD with one SWU apiece or would we need 2?
Also, is the number of certs affected by when/if the individual upgrades clear? Eg if we got the JFK-YVR upgrade but at the time of checking in at JFK the YVR-SYD upgrade was still waitlisted but subsequently cleared in YVR, would we be asked for another SWU at YVR?
I'm confused!

Any advice welcomed... Thanks!