Resilio Software Engineer interview questions

It was a 3 steps interview process: an HR talk, a first tech talk online, and a second tech talk in the office. During HR talk there was a company introduction followed by standard questions about my projects, experience, expectations, etc. In the first tech talk I was asked about my current project and to describe it in more detail. After that, I was told that company will reach out to me with feedback within 3-4 days. That never happened, even after sending them reminders. In my opinion, ghosting someone in the middle of the interview process is not only unprofessional, but also rude.