From the ATSB website:
A Boeing 717 inbound to Darwin was cleared to descend through the level of an
outbound Boeing 737 near Darwin. ATC subsequently cancelled the clearance and there was no breakdown of separation standards however a loss of separation assurance occurred. The investigation is continuing.
Not even the ATSB sound like they are overly concerned.
But no
"Qantas jets put on the path to disaster!"