Lots of consulting-type questions. I suggest preparing for this to get used to the line of questioning. Sample types: How many ping pong balls can fit in a Boeing airplane? What is x multiplied by x? The goal is not to have a correct answer, but for them to understand your line of thinking

wasted time, too much details on the step 1 of the pre-interview process, useless tasks that proves basically nothing, Anyway all was solved by me and they never replied even though my experience fit ideally to their profile.