Bloomberg Project Manager interview questions

Phone screen with the recruiter and two rounds with the Head of the department and manager. Everyone is busy, so the interview was quick and direct. we hopped on a 30 mins call and they were pretty direct.

I went through 5 rounds of interviews for a PM role. The last conversation was April 5. I assumed all of the feedback was good, especially since I kept getting scheduled to proceed in the recruiting process. I followed up after my last interview on April 6 and the hiring manager asked me to share my take home assignment, which I did that day. After that, they never responded. I followed up again on April 11 but still haven’t heard back. I’m assuming that they extended an offer to another candidate, which is totally fine, but I find it extremely unprofessional that they didn’t provide even a response (much less a formal rejection with feedback on areas of improvement), especially after I spent hours interviewing/preparing for interviews.