"Our students have commented, on numerous Incident Command Foundation courses, that the high rise XVR scenario provides them a steep learning curve in terms in terms of incident command skills."
Mark Roberts - Incident Command Training Instructor RBFRS
In terms of allotted time it might appear that XVR has played a relatively small part, it think it plays vital role. It has given the candidates first-hand experience of how it can feel to deal with incidents of this nature. This has proven a difficult scenario for them at this stage in their incident command careers.