You have to be buzzed in the building, so my first interaction was with HR. She was a very helpful lady to break the ice with while waiting for the hiring managers to meet me.
We found a nearby conference room and the process began with the basic interview questions. The whol experience was about 30m long in total. Afterwards we walked out with the classic, "we'll be in touch". However, to this day, I have not received any follow up. After reading other Glassdoor interviews for this company, I went in expecting that to be the outcome. Even after sending a post interview thank you, still nothing.
My advice is to be thorough. With this being an in person interview, time and money were set aside to make an appearance, at the very least let us know which direction you are going after the interview.