Zillow Applied Scientist interview questions

I had two interviews, the first one with HR personnel, where they asked general questions, like who I am, what did I do, availability to move, and salary range. The second interview was with the manager of the position I was applying to.

Applied Online. Recruiter contacted me. Scheduled a first round interview with the hiring manager after 3 weeks of our initial conversation due to the slow nature of her working. The interview with the hiring manager was one hour - included questions about machine learning and deep learning models. Also, a system design question. I thought it went well. And then, complete ghosting. Absolutely no response from the recruited, even after multiple emails over a span of 4 weeks.