One phone interview in the morning, including one code assessment. Get notified in the night to have an onsite interview. 4 interviewers plus a lunch for onsite interview. After one week, I got a email said that my background is not suitable for this position.

2 phone screens, 1 full-day interview. Was successful through many rounds, but ultimately fell short due to unknown reasons. Recruiter was stunned as well and couldn't really tell me why.