My interview experience with Zillow was unfortunately one of the worst I've had - so much so that I ultimately withdrew from the process, despite initially being quite excited about the opportunity and having strong qualifications for the role.
While there were a number of issues along the way, the biggest problem for me overall was definitely the timeline the team seemed to think was acceptable for a hiring process. After an initial email of interest from a recruiter, it took ~10 days to finally have a phone screen with said recruiter. It then took several weeks to get a phone screen with the hiring manager, another several weeks for the 1st in-person loop, etc. Uber literally hired a new CEO in less time than I interacted with Zillow.
I also received no feedback during the waiting periods of 10+ days between each stage, which in my personal experience of hiring teams is in rather poor taste. Perhaps strangest of all, when I did receive feedback it was overwhelmingly positive at every stage. Keeping a candidate you're excited about in the dark for long periods and ultimately stringing them along for months seems a very strange hiring strategy.
At the end of the day, I felt the team was either not being transparent with me about concerns they had with my candidacy, and / or that the hiring manager really didn't have a good sense of overall team needs and how to hire for them. Either way, sadly not something I could feel excited to be a part of.