Well... I know some folks are gonna kill me for this...but I interviewed with Haas recently (r2 applicant) after getting into HBS in round 1. Just that I didnt have the heart to tell Haas to buzz off (I genuinely like the school).
I did tell them about my Harvard admit in the interview though and she looked at me as if I had lost my mind.
The interview was pretty standard -- why mba, why haas, leadership example in professional and personal life etc. I guess, I'll just wait and watch
