I went through the final round presentation and have the offer so this may be useful.it was all fairly free flowing - I was asked to prepare a presentation and went through it but it was essentially a discussion around the presentation rather than me talking for a while. They seemed to be after problem solving approach, level of detail in the thought process, general business acument and presentation and conversational skills and 'presence'. At least that was the feedback I got. If you're already in consulting just treat it as a normal client prsentation but do highliht a problem solving framework and make sure you have lots of detail in your approach.Hope this helps.