The plus for us will be that you can travel on QR metal and get bonus avios on the BA code.
Most of these key routes will be all QR metal assuming this will mostly funnel people into services via DOH.
But does this show a souring of relations with QF? Currently if you book BA to MEL, you are put on SYD-MEL on QF. Now you’ll just go on QR from DOH.
I always used to get LHR-HKG-MEL with a BA codeshare on CX HKG-MEL.
For the record BA codes on QR LGW-DOH-MEL have been available for some time.
Spike