HelloFresh interview questions

First round with recruiter and manager were ok, straightforward and clear. Next round was weird, the description said case study and I asked if it was like consultancy, and the recruiter said yes. During the interview however it was not like consultancy interview, the interviewers didn't care about how I decided to go that path (and assumptions I made) and I reached that result, they just focused in final numbers and that was it. Not only that but it was a half an hour silence interview ( in which they send me the case) that I think would habe been better gained if they sent the use case before and I just explained the numbers and logic.