Not my first on site either, but normally I'd just need to go through a phone screen and a tech test to secure an onsite, not many hours of interviewing. Plus,

Not my first on site either, but normally I'd just need to go through a phone screen and a tech test to secure an onsite, not many hours of interviewing. Plus, I just listened to what the recruiter told me through the phone and confirmed through the email. Why would I think I'd need to go over another round of interviews after spending over 4 hours interviewing remotely, plus interviewing with engineers, to do it all over again?