Originally Posted by headinclouds
In the 1st itinerary, you can't do the SYD-NOU as that is a QF codeshare, not QF metal. The mileage based Global Explorer does allow this routing.
???
Accd to the oneworld flight list there is a Qantas flight from Brisbane and two from Sydney.
For that matter, expedia doesn't show it as a codeshare either. There are codeshared flights but it seems there is also mainline.