Easy WestJet seat selection at Qantas check-in. Long time before the WestJet connecting flight so had pick of the plane. Did not seem to be any 24 hour seat selection restriction with the check-in agent.
One thing to note: QF73 arrives into SFO at 9.00am. Need to pick up bags, work through immigration and transfer (and re-check) your own bags. Westjet check-in counter does not open until 11.00am, or in reality 11.30am, and then quite long lines even for bag drop. So for the passenger, the Qantas/WestJet codeshare partnership is not yet seamless.
I last flew into SFO in 2009 on QF73 where we stayed for a couple of days but I did notice a sign for pax whose were though checked so they could drop their bags and proceed through to their next gate through transit security and avoid going landside.
If QF have issued both your boarding passes they would've tagged your bag to your final destination in which case you can drop it off on the transfer belt after customs.
Sounds like you ended up landside if you were at WS checkin.
Maybe someone who has been to SFO recently in your situation could comment.
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