Do I need to ask certain questions that would push certain buttons per se, like should do ask, why did you choose me? Or should only listen take notes and ask nothing.
Like was I fired because I am too young or I was born in a foreign country? Nothing prevent you from asking that. Those guys have probably been rehearsed by HR on what to say, so they will deny outright. But you can try provoking them see if you can hit the jackpot. Take notes and make sure you understand your right.