CAR 163 Operating near other aircraft
(1) The pilot in command of an aircraft must not fly the aircraft so close
to another aircraft as to create a collision hazard.
Apparently there was
not a TCAS RA -all OK
AIP GEN 1-5 7.2 The Australian Transport Safety Bureau (ATSB) requires that all TCAS Resolution Advisory alerts, which involve a breakdown in separation only, are to be treated as immediately notifiable occurrences (ENR 1.14 sub-para 2.1.1e. refers).
No need to self report because it didn't happen - all OK
Sounds to me like they operated within the rules applying at the time.
I hope we don't have another LAUNY witch hunt like the last shameful effort by our 'out of their depth' witch hunters.