Capital One Senior Software Engineer interview questions

I applied for an Android developer position. Overall I found the interview to be one of the best I’ve gone through. I was contacted by a recruiter on LinkedIn. He asked me to submit my resume and a few days later I participated in a phone screen with him. He sent my resume to the hiring manager and the next day I was told that they wanted to setup a technical interview. I had the technical interview a week later. Their technical interview was a combination of rounds 2 (coding challenge) and 3 (technical conversation). I was told I did well in their technical interview and an in-person interview was set up two weeks later. The in-person interview was in between easy and medium difficulty. There was four rounds. One was behavioral, one was pair-programming, one was a general business question/evaluate some code and the last was a rapid fire QA session. The pair-programming was a bit challenging because you had to learn their software on the fly but the interviewer I worked with was very informative and I was able to produce the desired result. I was asked a lot of questions during the QA session. I left the interview confident and was surprised to hear that they were going to pass on my candidacy. They provided feedback for why they were passing and I appreciate that they left feedback.