Cisco Software Developer interview questions

Called and scheduled the interview. Introduced myself twice for different teams, tech questions, basic algorithm, linked list manipulation. Interview goes in a very weird atmosphere. interviewers discuss their work loudly in front of interviewee. It is understandable that you are very proud of working here, but I did not see any other interviewers from other companies behave like that in an interview to show their superiority to the interviewee. It feels like from the beginning of interview, they are trying to give you the reason of not hiring you. Are they trying to waste all of us’ time? Very bad experience and bad impression.