tl;dr: Cold, indifferent interviewer with an air of arrogance. Rejected even after solving the question perfectly.

Recruiter phone screen followed by a tech phone screen.

An easy-medium difficulty question was presented. I solved all stages of the question, yet was still rejected. At every stage, I made sure to convey my thought process to the interviewer and proceeded only after they confirmed my thought process was correct. I also wrote good test cases.

The interviewer seemed rude right from the start, felt quite cold, and appeared to have an air of arrogance. The rejection felt like the interviewer didn't like my appearance or had some other ego issue.

No NDA, but I won't give it out to respect the company.