I also called the admission office and was told (what else?) that it takes 2-6 weeks to receive notifications regarding alum interview. (I'm in US, you would think it's faster Anyway, what I did learn from various sources is that Kellogg receives the largest # of applications during round 2. Since lots of US applicants also request alum interview, it does take a while to make arrangement. And Adm Office in the past week has been swamped with work finishing up the admission decisions for round 1. So sit tight, we're in the same boat.