Adding to this list of partner booking failures, my current quandary relates to a Qantas ticket for travel Canada-Australia-Canada with QF codes on WS-operated flights within Canada.

I can log into the booking on westjet.com using the QF (Amadeus) PNR, and see the WS (Sabre) PNR there. As expected, online seat selection is not available. Notably, only the return WS leg shows up on the website - the outbound (first) WS leg is missing, with the first QF flight showing as the first flight of the itinerary.

Upon calling WS Platinum Line to sort out the seat selection, they can do the return WS leg no problem. However, the outbound leg is showing up on the Sabre itinerary as 7 instances of the same flight, all unconfirmed. By adding the PNR to TripCase I can see that the Sabre eticket is correct, but the Sabre itinerary has this peculiarity. Despite calling WS Platinum twice, and the agents speaking to the Help Desk both times, supposedly WS can't do anything about it - QF apparently needs to fix this. Unsurprisingly, a call to QF says the booking looks fine and normal on their end and that WS would need to fix anything causing issues on their end. Despite getting nothing fixed, I'll note that both airline call centres were friendly and wished me luck sorting it out with the other airline...

Since this is the very first leg, and I'm not the one travelling, I'm not keen to leave this to hopefully be sorted out during check-in.
I'm getting nowhere with either airline - any suggestions as to which airline actually has the ability to fix this, or other ways forward?