Koch interview questions

1:1 Interview for about 30 mins. Called back about a week later for an onsite interview with a group. Very nice

Applied at campus career fair and got an initial interview on campus. They were also very nice to have a social before interview. All of them on our campus were alumni who work for Koch. During the 30mins interview I was talking with a vice-president, who graduated from our department. The talk was very nice which consists of behavior based questions and also market (demand/supply) analysis on agricultural industry. We also talked about policy issues. He seemed like me. However I did not get a further interview and do not know why.