Boston Consulting Group Consulting Intern interview questions

very extensive interview process for an intern position. I applied in December, had the online case in January. First round was beginning of March with 2 case/personal fit interviews (each 1h). Second round was end of April with 2.5h written case, 2 case/personal fit interviews and 1 HR interview based on an online cultural assessment. Overall, I was very satisfied with the organization of the process although it did not suffice for an offer. However, for an intern position it was quite a strenuous process, especially the written case.