Cognizant System Engineer interview questions

Had a phone interview with recruiter, and then was asked to come in for an in-person interview. I met with the hiring manager and a senior person on the team. The interview seemed to be going well, and then the third person who interviewed me walked in and said he only had a few minutes and needed to go to another meeting. He took a look at my resume, asked me 2-3 questions and then said he had to go and would show me to the door. No one ever followed up and called me back. I received zero feedback. Personally I'd say it's a very unprofessional process overall.