Google's interviews have multiple tiers. Tier 1 is a phone interview. 45 minutes with one person, 45 minutes with another person. I was only able to get through the first tier. I had an interview scheduled for the first week of December 2017. I felt that the interview went really well. I was aware that Google employees would be busy or off for the Christmas/New Year break, so I did not bug my recruiters or interviewers. 3 weeks into January, I got a call from my recruiter saying that my interviewers had not gotten back to them about my interview but they are sorting it out. A couple days later, I was emailed for another interview, but it was the same exact format as before. This led me to conclude that my interviewers lost the information on my initial interview. I was bummed about this because I did so much better on the first one than the second. Things happen for a reason, I guess.