Are there any other examples of "dual listed company" airlines?
Not dissimilar is the algamation of Air France and KLM, one of the world's most successful airline amalgamations, which allows both airlines to operate autonomously, whilst both achieve economy of scale.
From an economic and rights perspective, amalgamation of QF and BA makes sense and would be very attractive to share holders
and staff, although expect some rationalisation in non operational areas.
And before all the uninformed hand wringing starts, read up on the very successful
AF - KL amalgamation into two autonomous carriers.
Don't be surprised if Air New Zealand does not also join the QF - BA discussions.
I wonder if the various Virgin airlines around the world may not be next?