Nagarro Technical Architect interview questions

A use case to design, a common case howevere asked a months work in an hour. Interview Aptitude Interviewer was not at all interested in interview. Solution to given problem does not matter, felt like he was thinking he was out of the world intelligent Then he asked about my project and design pattern I used, I explained but he refused to agree on my design pattern selection without knowing complete use case, which I felt wrong.