Very casual for a professional interview. Two interviewers alternates in asking questions, one male and one female, which added a good contrast for me. I was sitting sort of between them in a triangle fashion, so I could easily talk directly to each one. The questions were more open concept, which made the interview more of an open discussion between myself and the interviewers. Prior to the interview, the company held an information session to discuss the program for which I was interviewing for. This was also more of a discussion type format which allowed for open questioning and comments about the program.

Standard behavioral questions, why supply chain, when have you worked with a team, and why am I interested in Halliburton. I got an update email a month later saying they were still interested in me and that they were still reviewing applicants, but I haven't heard any additional update yet. It has been over 4 months.