Underknown interview questions

2 interviewers were present during the interview. They briefly introduced themselves and then asked me various questions about my experience with video editing, animation audio editing and if I'm interested science and similar things. Furthermore they wanted me to tell them about my personal life, hobbies, interests and such. At the end they offered me to do a test project where I had to edit footage that they provided to emulate a video of theirs but with my own creative input. I had a deadline of about a week from the point of receiving the footage and project briefing. I submitted the video and only received a very short rejection e-mail. Since I was quite confident in my abilities and the video I've sent them, I asked them to please provide a reason for why I was rejected. They never replied to my e-mail. Pretty disappointing considering that it took multiple days to edit the video for them. I would not reapply at this company. Fortunately, I was hired by a much bigger production studio, so the rejection was a blessing in disguise.