That my friends is the question.
As we neared completion of planning the itinerary for our trip to the USA and Canada we needed to figure out how to get back. It seemed the cheapest and easiest route that didn’t involve lengthy stopovers anywhere that potentially required overnight accommodation was to fly from Seattle to Los Angeles and then depart our international flight home.
The cheapest option involved booking the flights together, so the booking was Seattle -> Los Angeles -> Sydney. The flights were with Alaska Airlines from Seattle to Los Angeles and then Qantas the rest of the way to Sydney. The stopover at LAX though was only 1 hour and 30 minutes and we had to get from Terminal 6 to the Tom Bradley International Terminal. My gut instinct was that this time is tight for a transfer between domestic and international terminals at Sydney airport, even without checked baggage, let alone at LAX.