Walmart Global Tech Technical Program Manager interview questions

They called me for the position from my previous resume. I was given 24 hour to pick an interview date within the next 7 days. I was not aware about the job responsibility or anything to help me prepare at this point. I was told that the interview would be hour long and technical and behavioral mixed, but I was only asked two behavioral question and then rejected. I wasn't even informed anything regarding how to prepare for the technical interview and during the actual interview, I was described how the position is suppose to function for the first 15 minutes. And after this interview, they told me that will not pursue me further. I do not understand what they were trying to achieve, but this was the most absurd interview experience I had so far.