Google Engineering Manager interview questions

Long process with a lot of back and forth. Interviewed for Eng Manager, Tools and Infrastructure. Started with a recruiter intro, call with managers, then went to onsite of 5 sessions. Onsite had 2 management sessions, 1 design, 1 coding and one tools and infra session. Overall people were really nice and the interview was not super hard. I would say this is a good place if you look for the stable big company. After the onsite, you get into HC, and after that to offer committee to determine your comp level. this is very tiring and long process, especially if you have other offers waiting. During the offer, you get to meet different groups to select where you want to work. People I met sounded arrogant and made me think twice if I want to work there. Google is very bottom-up org and engineers have lots of power, managers are just to support them so it's not for anyone. I turned down their offer as I had an offer from a company I liked more.

Applied with referral and was contacted withing 1-2 days. Proceeded with a technical a phone interview. Asked about current job and a coding question which was not a particular hard (group strings based on given criteria). Find an optimal solution almost immediately and coded it quite fast, but stumbled in one place. Eventually got a working code for optimal solution. Next day requiter contacted and asked to schedule (the first available slot in a week) a meeting to share results. On a meeting requiter said google won't go further this time and encourage to reapply, stay in touch etc, (all usual staff to end it on positive note). The only feedback I got is that technical/algorithmic side was not strong enough to go further. This is quite strange, since the solution was optimal and provided in interview time, but I didn't manage to get more details. In general, natural experience. On one hand organization of interview was good, on the other, the feedback was irrelevant to an actual flow of interview and I have to wait for a results more than a week (although it was available immediately after interview).