The first interview takes about 10-15 minutes. This interview is explained to be the time the interviewer gets to know you to decide if your personality would fit with the job requirements and the company culture. During the first interview the interviewer will explain that the company is successfully and growing due to their "business-to-business (B2B)" approach. What that really means is that their "account associates" are really door-to-door sales people.
If you aren't familiar with how B2B operations work (like I was not at the time), you don't find out that it is a door-to-door sales position until the "shadow interview" also known as the 2nd round interview. This is where you get into a car with one of their "top account managers/associates" (keep in mind a complete stranger) and they drive you around to different business offices. They open any door that is an office suite to try to sell office supplies to whom ever is the office manager.
During my second round interview, the "account associate" that I was teamed with walked into a personal office of an individual and proceeded to let himself in, even though the man was on the phone and had a look of confusion on why we were still in his personal office. During the first interview I was told that there would be instances of rejection, because that is part of the position. This was not rejection, it was an understandable reaction to practically unlawful intrusion.
If you don't want to spend you days driving around, knocking on any door in an office building and being extremely intrusive, then I suggest you don't waste your time with this company. They should just name the position what it really is...door-to-door sales.