2 interviews back to back both 1:1. Gave a business case situation. I thought i did everything right, had a good structure, was able to brainstorm and even drew a BCG matrix to answer a question. Yet did not get an offer. so they are hard to read. The best way to prepare for the interview is to be good in structuring. so pick up any newspaper's business section and draw random structures for every situation. that way, u can be prepared for any kind of a case.