Just Checked in to with Alaskan in Portland. Have an 11 hour layover in LA before reward J on QF 12 to Sydney. Checkin desk was super helpful, booked bags to final destination and issued bording passes to Sydney too. F ticket was 200 US and 60 sc, good product and nice to fly too. The rules are less than 12 hour layover is no problem. Have had issues with aa on seperate bookings, especially transferring from Bne to Syd - LA aa flight so another option, especially for the west coast