Google Software Engineer - Internship interview questions

First was a pair of online coding questions. 45 minutes each and no efficiency requirements. About two weeks later it was a pair of phone interviews using Google docs for shared coding. Each was 45 minutes and they were back to back. Two weeks later they got back to me and schedule two more phone interviews. As I understand it this is unusual and might have been because I struggled on the second interview. About two weeks after that I recieved an automated email denying me.

I applied online on the Google Jobs page, and rapidly received a 2-question online assessment. After that, they scheduled 2 phone live-coding interviews over a Google Docs. Each interview took around 30 minutes.