i just had a nice phone call with the recruiter. After that i was given an exercise and the feedback i got was pretty vague. I was told my case study is too general but i wasn't given any instruction on how they want it to be. At the beginning of the doc was said that i can do and write wathever i want and not spend more than 2hrs on it. I spent 20 hours on it just to make it not general and superficial and yet, that was their feedback.