I have a 2011 Ford Flex complete with Nav and DVD headrests. There is connectivity between the NAV and headrests as I can select which one I want to play over the speaker system. What I would like to see is the video being able to be displayed on the Nav as well. Of course this would only work while parked as this is how the system currently displays DVDs on the Nav. DVDs can be played on the Nav on its own. The headrests can be slaved to each other to view the same DVD but there is no video link between the NAV and headrests or vice versa. I am someone who sits in the car and waits for a ferry from time to time, which can take a few hours. Having the same movie playing on all screens with the sound coming out of the speaker system would be nice. Yes, we can watch two or three different movies but often I would like to watch the same movie as the one being played in the back so being able to select the video to be played on the front Nav screen would be great!