CAVOK92 & ACMS,
I have pointed out several times that the airspace set up, both boundaries and classification are deficient, I have gone into a bit of detail regarding the workload required from both sides of the fence in this scenario.
You are both banging on about 'why wasn't traffic given sooner' I've pointed it out to you. To continue on about the timeliness of the delivery is to overlook the cause, it's a contributory factor yes, but it not the cause. Having an extra 5 minutes to consider the traffic may not have prevented this accident. Class E Airspace would have given these aircraft a much greater safety factor with positive separation. IFR traffic in high density Class G Australian airspace is archaic.
I can have a conversation with either of you or anybody else about just what happens in this scenario, it is just too lengthy to 'back and forth' on a bulletin board. But to target an ATC in this instance is stupidly misguided and wrong.