Duo Security Solutions Engineer interview questions

Initially, the interview process was great! I spoke with a recruiter or 2 and the hiring manager. Following these calls, I had another with the hiring manager where I did a POC like presentation utilizing the Duo product. I then had an onsite interview with 3 potential colleagues as well as an additional conversation with the hiring manager. After this, I waited for about 2 weeks before finally getting contacted for a final interview with the VP of Sales & Operations Engineering. Overall the process took approximately 5 weeks. Now for the not so positive part(s).... Through the interview process with Duo, I have read about how smooth the process is and how, if not selected, people would get a call or email from the recruiter giving them feedback as to why they were not chosen for a role. My experience was not as smooth or positive. I waited a week before reaching out to the recruiter to see if a decision had been made and I just get a one-liner email apologizing for the delay and that they chose another candidate. I responded back requesting some sort of feedback and still have not gotten a response. Normally this wouldn't be a big deal as the recruiting interview process with most companies is broken, but I expected more of Duo. I spent a substantial amount of time prepping for calls, traveling to the local office, etc.. And I would expect to get something back.