I agree that ATC is like a big game of pass the parcel - but what's inside the last wrapper?!!!
While you're in Oz airspace you'll be subject to a mix of radar/procedural control. Starting with radar ex-Sydney, but as you fly further NW you will be out of radar coverage for a while unless your FPL takes you through Darwin or Perth areas where you'll get a last taste of radar before heading over water.
Basically we have radar coverage from Cairns in Nth Qld all around the east coast to Adelaide, then there's a bit of a gap until you get to Perth and a bigger gap up to Darwin.
Of course, good ol' TAAATS gives a lovely illusion of radar control in procedural airspace using flight plan tracks, but ATC is still restricted to procedural standards (in case HAL2000 and Eurocat are related).
