I have previously eUpgraded only on direct international flights without connections or with multiple segments with same the flight number (AC 33/34), but I always believed that a single eUpgrade covered all segments on a single trip — in this case, YYZ-YVR-MEL — although the AC webpages on eUpgrades are less than explicit on this point. However, I'm uncertain how I should approach the eUpgrade request when the segments have different request windows (see screenshot). Should I just wait until 7 days? Should I request the YYZ-YVR segment at 14 days, and then try to somehow add YVR-MEL at 7 days? I don't want to get charged upgrade points separately for each segment.