I had a phone interview with a hiring manager which lasted for 30 minutes. I got scheduled to come in for an in-person interview about two weeks after. Everyone there was very friendly and polite, the interview was a bit difficult at times but the questions they asked were fair.

Got a screen call asking if I was still looking for a position, and they said they have an emergent opening for a position where I would have the same exact responsibilities as my current job (which wasn't all that great to begin with). Nevertheless, I still agreed, and had a phone interview with the manager which was more of an informal talk, where we discussed what both of us are looking for, and what I do, and how I can be a great asset at the company. They wanted to proceed with me, so they flew me out to San Diego where I had an interview with the manager and one of their principle engineers. This was more formal, asking questions about what I actually do, specific examples, STAR questions, etc. nothing technical. I was told they wanted to make me an offer, but asked for references first. That process took a while on their end; They gave me a formal offer, but negged on relocation, which was crucial to me. They wouldn't negotiate on salary either so I turned it down. Took a while to hear from HR consistently.