Extremely formal, with a 5 person interview panel including HR. The panel explained the STAR format was best in terms of answering questions: Situation, Task, Action, and Result. Panel members took turns asking a series of about 6 questions--the questions were behavioral type (tell me a time when you…) and had more to do with general leadership examples, team building, diversity and inclusion, working with a difficult customer, etc. rather than dealing directly with the job position at hand. Each main question had multiple sub-questions (what happened, how did you deal with the specific situation, and what were the results). Panel members asked follow up questions to make sure all aspects of the STAR format response were covered.