Had an interview with a non technical manager. She forwarded me onto the pro services team for a technical interview. That was relatively easy, basic TCP/IP. They called me with an offer. After a few days I accepted. Then they said wait we need you to do one more interview with the TAC team. I thought this is odd. So I said okay. It was three hours of RFC trivia. After that the internal recruiter would text me once a week and say I will have the offer in writing soon. Eventually I started ignoring him. Not sure if this was and interview or a practical joke.