Interviewed with director of the department and 2 other senior members. I think they just called me for the interview without looking the resume. During the interview they raised different questions those weren't relevant to my experience or the job role. I got the feeling this is just a fulfillment for the mistake they have done, calling a candidate without going through resume. Wasted 1 hour to discuss irrelevant issues.

Informal meeting is usually the first contact. Then a formal interview at the office with one-on-one interviews throughout the day. Consensus is gathered after interviews and hiring manager (Director) makes decision.