After my interview onsite, the recruiter never let me know the feedback that i find quite disrespectful. I understand that recruiters have to work in a very fast-paced and stressful environment, but they should be more human to their candidates especially if there has been a lot of contact until the unsucsessful interview.

The interviewer arrived 25 min late and didn't apologize or gave some explanation. Borderline unmannered at some parts of the conversation, I think that's his idea of objectivity and assertiveness. No difficult or tricky questions, he needed to know much more about the industry to come up with that type of questions.