Vitalograph Software Development Engineer interview questions

I had a 20 min interview over Zoom and was given a technical assessment. I was asked some generic questions about the C# coding language and about specific parts of the tech stack they use. However, the job posting had not mentioned some technologies they used that I was asked about. The interviewer seemed very disinterested so I feel they had decided against me pretty much immediately. The technical assessment was extremely short notice (return same day) and asked me to critique simple code without changing the functionality.