Morgan Stanley SRE/DevOps Engineer interview questions

Interviewer kept trying and prying into past projects despite mentioned NDAs like he was trying to recreate the projects himself. Mentioned working with a Unix framework ONCE and was asked "What is Unix" and to give a thorough history and technical explanation of how Unix worked. Felt like a police interrogation rather than a technical interview, almost made me throw up after. Extremely unprofessional and almost predatory like behavior, image of the company shattered completely.