Bloomberg Senior Software Engineer interview questions

Recruiter reached out to me and got me started with the interview process. I submitted a resume which she passed on and got a request to interview for a team. A few days later they came back and told me there's no longer a spot on that team so we'll put you in for another team. Scheduled a 1 hr phone screen. Interviewer clearly did not want to be there; he was quite rude throughout the process. Whatever, I thought I'd just be polite and finish the interview to the best of my ability. He asked a few behavioral questions about my current project which I answered. Technical problem was straightforward -- word search in 2d matrix. (Leetcode medium) Finished it with time to spare, talked about some optimizations, wrote a test framework, passed all test cases on first try. Added some edge cases as well which also passed. Discussed space and time complexity. He told me everything was correct and the problem was solved the way they wanted me to. Got rejected 2 days later with no explanation. Would've appreciated some explanation or feedback because I'm just confused what happened and would like to know for future interviews. Only things I can think of -- he prompted me for one of the test cases, he wasn't satisfied with my work experience / explanations. Not sure.