It was easy and straightforward avoid attending it unprepared because it won't be easy, so preparing before hand will be advantageous for you and increase your chances of being called in for further action
I applied online. I interviewed at LinkedIn (San Francisco, CA) in Mar 2021
Interview
Introductory recruiter call asking compensation requirements, talking about company, and what they are looking for
Then hr call asking questions about background, etc, etc
Onsite, 5 interviews, 1 system design, they will also ask behaviorial questions