It doesn't make sense. QF 73/74 is seasonal. When QF metal flights are not operating, it wouldn't be possible to include YVR in a DCIR routing if this rule is correct.
I originally tried to book this itinerary with AA and they had no problem with the AS codeshare (YVR-SFO) but they couldn't get their system to book the QF flight numbers for SFO-SYD and I need to get my four QF flights to maintain status so I thought I'd book direct with QF.
I'm confused, is our Oneworld shrinking ?