In qantaslink it matters little as to whose AOC an aircraft is on, the Q400's are all on the Sunstate AOC but both Sunstate and Eastern pilots fly them, it depends where they are needed... so if Qantaslink need jets on the east coast it would matter little that they were on Networks AOC, if they are required in QLD then Sunstate pilots would operate them if south of QLd then Eastern pilots would operate them.
and that's straight from the Townsville refueler.....