with calling in hr office about half an hour. for YVR3, another interview is math flow, it is not clear. I didn't get the email about it after applying but hr inform me and I prepared myself and on the site among working hours I had interiew.

30-40 minutes depending on the interviewer. There might an aptitude test as well. Three rounds with different departments that might involve learning, HR and operations, with each interview going for about 10-15 minutes.