A traditional interview panel, all white - management level, no HR present; I was not provided any example questions prior to invitation and found panel stand-offish and somewhat passive aggressive. Questions were very simplistic in structure but evidently had a hidden meaning as they used a lot of acronyms and evidently were looking for someone with a significant level of understanding equal to their own which was not conveyed in the job spec, felt like a series of trick questions or maybe they didn’t actually know how to conduct an interview themselves, felt like an interrogation.