The problem with HR driven process interview is that the person with whom you interact may have little to no knowledge of the profession. Perhaps by design it is this way.
Technical interviews have a technique and format.
Behavioural interviews have a technique and format.
Whilst there may be token pilot presence on an interview panel, it is pretty easy to work out who has the 'chair', body language and other tells will let you know how it is to proceed.
This is all knowledge that is able to be garnished and assessed well before you enter the lion's den.
There are plenty of resources available to teach testing and technique. The days of the internet do help occasionally!
The recruitment process is a sort of game, not trying to be condescending to those stuck in the middle of it, but you can prepare and anticipate a lot of the likely directions the process will take.
gone are the days where pilots interview pilots. This industry is not alone. Financial professionals in my field labour through HR driven process. There is help.
In this bloke's day he would have told you '
every battle is won before it is ever fought'