I think it is a fair point. The applicant invested 6 hours of time, plus possibly travel time, expenses and maybe even overnight costs to attend a selection process.
To be fobbed off with "no feedback" is IMHO an insult.
I'd personally let the waters calm for a few days and then ring the VAA HQ phone number, speak to the lovely receptionist and ask directly for the person who interviewed you.
There are no filters on the phone desk at VAA.
Stay polite, seem keen and hope they help.