My guess is they already have their story mapped out. So how you present yourself and story may never come across the way you intend. They will cut and edit your words to present the story in the way that they want it to come across. That may sound awful negative, but they do not go into these things without having the story line defined and laid out ahead of time (they need to sell the story to their bosses ahead of time to get resources).

Be careful you do not get run over by people with an agenda.