Originally Posted by
canadiancow
Could they have thought "Not applicable if Air Canada provides a better connection/connecting time and/or earlier arrival time, that does not cause a misconnection.", and since your flight now puts you at your destination slightly earlier, therefore the contents of the guidelines do not apply? The policy does seem pretty unreasonable. No reason a change (due to AC, no less) in any part of an entire ticket could potentially cause everything to again be at the mercy of upgrade availability.