Target Executive Team Leader interview questions

I applied online and received a call from a recruiter within a week. We chatted for about 10-15 minutes, which set up a more formal interview with her the next week. That interview lasted about 45 mins and included about 4-5 questions related to providing great customer service, disagreements with a boss, fixed a problem, and a mistake i made. After passing that phone interview, I was asked to take an online assessment that was about 1 hour long. I was contacted a week later about meeting the STL (store team leader) for an in person email. That interview was very similar to the phone interview with the recruiter but more time was spent talking about my skills and personal interests. I felt that we clicked very well and she asked me to come back for an interview with her boss at the District level. A new interview was scheduled for the following week with the DTL and a STL from another local store. The interview followed the format of the others with all questions being behavioral based that needed to be handled via the STAR method. The interview seemed to go well like the others, but the energy level from the panel wasn't as the prior two. It was pretty clear that this group did not wish to show any emotion and sat mostly stone faced. The interview was about an hour and was told i would be called back that week. I got an email within a week saying that I would not be getting an offer. I frankly don't know what went wrong given that the interviews with the recruiter and especially the STL that would be my boss went very well. My thoughts are that if the STL (person accountable for the store) likes someone, that person should be able to hire that him/her and not be overruled by the DTL or anyone else that isn't directly accountable for the store.