I interviewed during a visit weekend back in October. My interviewer had not read my profile (blind interviews are pretty standard for on campus), and I was asked to bring a copy of my resume with me. The beginning of the interview was fairly standard: run me through your resume, tell me about a time you resolved conflict, etc. I did get the dreaded “tell me about a moment where you experienced failure.” I think the fact that I wasn’t entirely prepared for that question worked in my favor, as I did not have a canned response that spun a failure into a success. I was rather honest about it, and I think the interviewer respected that.
The interview lasted about 45 minutes. There is a big focus on “fit” at Kellogg, but the questions they ask do not explicitly ask how you would fit in. So whenever you are asked about times you worked in or lead a group, be sure to wind it up into how that fits into the Kellogg picture.
I ended up being admitted and will be attending in the fall. Good luck!