VA already have a crew base in Perth for both pilots and cabin crew. They would operate both Dom and any SHI.
Here is the flight times they had on the prior double daily application. Considering the amount of aircraft they overnight in Perth I would imagine an overnight service would still be planned. Same day return probably won’t be too popular with crew.

Here is the flight times they had on the prior double daily application. Considering the amount of aircraft they overnight in Perth I would imagine an overnight service would still be planned. Same day return probably won’t be too popular with crew.

