You seem to think it is unfair to put a candidate into an unfamiliar environment while loading them up with superfluous chat. You also seem think that those with inside knowledge will be at an advantage because they will know to assert themselves and tell the recruiter to “stand by” if they need to.
I disagree with the first bit, I’ve said why, and there’s little point saying it again because I think we just disagree at how challenging the unfamiliar environment is.
The second bit is is essentially saying that candidates who research the interview process are at an advantage. I fully agree with that but fail to see how Air NZ is any different from any other company. Those who do some homework will be rewarded.