Would make a lot of sense to just contract the whole thing.
How would a commercial operator do this.
Fly a minister to Longreach and arrive midafternoon.
Settle in for the night. Get a call that the aircraft is required for a heart/lung retrieval from Nelson in NZ.
Plan and fly back empty to BN.
New crew plan the NZ flight.
Fly to Nelson.
Wait a minimum of 6 hours on the ground.
Sleep in the aircraft.
Fly to Auckland for fuel and Customs.
Fly back to Brisbane.
The NZ flight is way over the duty limits for any AOC operations.
How would an AOC holder conduct that flight.
Private operations is the only way to conduct that flight unless you positioned a crew in Nelson.
Organ retrievals do not give time to position crew.
The above is not fantasy. It does happen.