The whole process was clear and fast, an initial HR call, a meeting with the CEO of the company of an hour to discuss my situation and my experience, and then a case I had 4 days to prepare and had to expose in an hour. I got rejected at this final round with no feedback whatsoever, I reached out to HR and to the CEO to ask at least for a small feedback, and I got no answer. I don't understand why they behave like this.