I interviewed with an HR person on the phone before being brought in to interview with 4 folks within the department on-site. 3 of the people I interviewed we're Managers that did not seem fully engaged or prepared for the interview. The last person I interviewed with was a Director who I thought was fully engaged and interested and a good interviewer. He asked tough and pertinent questions and followed them up with insightful and thoughtful questions and comments. I probably would not have taken the job had I been offered, the culture I observed on my on-site interview did not match what I was looking for. But I wasn't offered so I didn't have to make that decision.