Delphi Technologies Industrial Engineer interview questions

Super fast. I was selected on spot. I was called for interview by reference of my friend who went to attend interview for a different role on that day . I was interviewed by the the ME manager. It was technical round and everything he asked was technical questions and thorough. I had knowledge on all those questions and I thought I was doing a great job in responding. As rhe round ended, he called for the HR personnel and told them that I was selected for the role and HR can go ahead with the salary negotiations.