I had an initial 30 minutes phone interview with a recruiter, then scheduled an in-person interview for a 1 month later. It got rescheduled at the last minute to a few days later. I went in and spoke with the same recruiter from the phone interview for about 10 minutes, then one of the Account managers for about 15 minutes. It was very relaxed, they are mostly just looking to see if you have the ability to hold a conversation and connect with people, as the job is like 95% networking. Just don't be awkward.