There are four steps to these interviews. The first is the overall summary of your resume. The second round I had with someone who is not a Change Manager at the company, but asked broad basic "what if" questions on Change Management and what I would do.
I then received an email that they liked my experience and previous conversations and to skip over the 3rd round interview and change it to the 4th round, 3-hour interview.
The 4th round is a quick email/check-in with a member of the hiring team on your case study, in which you then have less than 2 hours to create an entire presentation and prepare to present to two other staff members at Propeller. They give very little context on what they are looking for and the only information outside of what was pre-written for the case study was "we are looking for the higher-up view of this project. You have to make up some information yourself in order to even address some of the typical change management needs. When presenting the two interviewers role play as members of a company you're working with to ask questions throughout. It's mostly thinking on your feet and hoping you're answering what they are looking for since it is not very clear.
Despite thinking that I did very well, I was not offered the position and the only feedback they were able to provide was that I did not address the risks and success measures adequately and my experience as a change manager at a technology company is of a different context than their work as change managers at technology companies (????).