Listen to the flow between Mark and Milo. How does Mark do that? Study his voice, his tone, and how he flows between different aspects of the X-Ray results and the various models.
Mark went ... off the structure to some degree here ... as he felt it would serve the client the best. Yes ... you want to follow the structure, but as you gain skills and experience you'll learn if, when, and how to modify your approach to best serve the client.