Qualtrics Advanced Research Analyst interview questions

After an initial screening interview I was sent a case study for which I produced ppt slides, followed by a group interview. I had a disjointed process, as once I sent my case study results I was informed the position had already been filled. A few months later I was contacted by the recruiter, saying there was another opening for the same role, and we picked up after the case study, right to the interviews. As a result, I never presented the case study, nor received any feedback on it.