Most of the back and forth was via email to start and then we went to phone and then finally we met in person. It was a bit difficult to get in the building as security would only let you in exactly 15 minutes before the meeting.

Once you get the in person interview get ready for a 5-6 hours session with your entire team. Not too bad, but they will ask you all questions about your resume and past and present. No lunch provided at all though. If you know what you wrote on your resume, you are fine.