Free style. Interviewer came up with question on the spot. And the second interviewer contradict him. They seemed like they were sure themselves about the answer. They did not make the connection between my resume and the applied position. They seemed very stressed at the time. The recruiter didn’t return to me within a week, I called back and the said they’ll get back to me within the following week. The returned a bit after that with a positive answer. By that time I accepted a different position within the company.