Walmart Engineering Project Manager interview questions

In general, I had a negative experience with them. I was interviewed by Walmart eCommerce in Feb and March of 2016. I was recruited on-campus and first I had a phone interview with one of the managers in Arkansas. Then I received an email for passing the first phone interview and having a web-based video conference in two weeks. The video conference was with four engineering managers. I was asked a lot of situational based questions (STAR) which had a great amount of concentration on data processing experience. I have a Master's in mechanical engineering with a concentration on computer science and robotics. So it can be imagined that I had dealt with a great amount of sensory data and mathematical methods, but not specifically economical or marketing or logistics types of engineering data. Besides, I was recruited on campus, so I was not imagining that they would expect some sort of industrial exposure to engineering data. I did not have a good feeling about the interview. But later on, I received another email that one of their engineering managers was interested to hold a third phone interview with me. One important aspect of the people who interviewed me was that three out of four were in their late 20's and they were engineering managers. As I checked their linkedin accounts, I found that one of them was even younger than me and had less than two years of engineering experience, including his previous internships. Accordingly, I myself felt like that perhaps they are not as professional and skillful as they may introduce themselves to be. During the third interview, I was again asked to elaborate more on the type of data that I had dealt with and I made it clear that my past experience was not related to engineering economics or logistics. Consequently, the gentleman told me that he would put my application on hold since they had better candidates.