Zillow Principal Engineer interview questions

The recruiter contacted me on LinkedIn with the position. The first round was a call with the hiring manager where he asked me basic questions about my experience if I fit into the position. Actual interviews began with an online coding session. I then was invited onsite for a full day of interviews. In the onsite, I had one coding interview, a behavioral interview, lunch, application knowledge interview, design interview and one last interview - a mix of coding and design. Overall it was a positive experience, except for two things - 1. The recruiter apparently went on a leave during the week leading up to my onsite interview so I was literally given no information regarding what is supposed to happen on my onsite until a few hours before I flew out. 2. The last interview which was a mix of coding and design was originally scheduled to happen earlier during the day, but the schedule was randomly switched out. Shifting interviews around isn't a big deal, but after speaking for almost 6 hours straight, there was barely any juice left in me to keep my brain sharp.