Pity you won t let on what the callsign was , then perhaps a dose of public humil would remind Capt D/a-- to pick his act up or get his boss on his tail ....lol .
I m figuring it was a PA 31 or similiar BIG !!! plane so close to Darwin .
Either he s new and got no spare capacity to answer an unexpected call ,
or he s a Capt D/Ass whose arrogance and exalted position of flying two engines instead of one ,tells him he doesn t have to regard others .
I reckon it could be either or both , and prob from the less reputable side of the GA area ,
Heard of a DN operator with half a dozen BIG !! planes ,whose CP only just got his IFR and has minimal time and now getting all his boys to fly IFR ,to get their experience up before the wet hits ........