Arcatron Mobility interview questions

The interviewer left abruptly without providing any feedback or giving any information. They directly left the interview without giving a single word that I was looking for another experience that was not similar to what I was looking for. Also, they don't mention in the JD that we are looking for this much expertise—very Unprofessional Interviewer. But HR is supportive and professional. She also felt bad but she knew the professionalism.

it was for a backend internship position, was not too difficult. there were 2 data structures questions medium level and 3-5 web development question. It went alright all questions were answered.