I had the opportunity to take the process of chief of staff until the last step (case study). I discussed my case study with their CEO and chief of staff and send them my analysis. I have NEVER received any feedback. I find it absolutely disrespectful to go so far in a process, to invest so much time and above all to have the opportunity to talk to C-levels, without any feedback. The least you can do is reply to emails and share feedback; that's the minimum you can do as HR involved in an “innovative” scale-up. Make sure in your ITW process to ask for feedback, I just have the sentiment that they use my work for free.