I've booked economy tickets via British Airways from Sydney to London return with a stopover in Singapore. One of the return flight legs, Singapore->Sydney, has some Business class tickets I can buy with Qantas Rewards as it's operated by Qantas.
Before I waste 2 hours on hold with Qantas I thought I'd ask here. Can Qantas upgrade my tickets to Business Class even though I booked via British Airways? And if they can't, are there any issues in purchasing two Business Class tickets even though I have Economy tickets for said flight already?
No