Paychex Business Development Manager interview questions

I was contacted by a recruiter for this position . They explained the role and the recruiter thought I was good fit for the role. I have a business development background with fortune 500 companies at the enterprise level and experience with Start-up in the SMB market in Fintech and SEO /SEM marketing . I was well prepared for the interview. I was forwarded onto the hiring manager . It was explained that the interview process would be 5 steps . A pitch to the hiring manager and a final interview with the director of the division of SMB NYC.After a decision would be made. Fair enough, I was for warned I did very well at each step through all phases. I received a call saying that although I had successfully did well at all of the five steps . They now wanted to add an additional 6th step. A ride along with a newer employe that they deemed a " rising star" that has been with the company for a short period ( Less than a year ) . During the 5 steps I did a ride along with a Sr. Seller who had been there for 5 years . Great guy more of a training than just a ride along. None of this was sent in writing the hiring manager left message to just call him back..... . Then tried to explain backtracking on his previous expectations that he set up. ( red flag.... do you do this with your clients ? ) Something does not sit well with me. Why does my interview process have extra steps ? If I'm not a fit I'm not a fit you send an email from HR saying a. "We are looking for people with a certain skill set" ,,,,,While we value your talent we are going with other candidates we feel are more suited to our business model . We all get them from time to time....This seems like something more is at play here, But it showed lack of professionalism and bad management skills ..... Time wasting at best , not worth the trouble of three weeks and 16 hours of my life .