I know this post is a little old but did you figure out your Uconnect system? I have a 2013 also and it took me a few minutes to figure it out also. They don't make it real easy to figure these things out. But, you should be able to switch to any other media selections while the DVD is on and the headphones are on. Some settings could not be allowing yours to separate the signal. I would try to reset to default settings and then turn the DVD player and headphones on. You should be able to change to satellite radio or FM/AM radio while the DVD still plays on the monitor in back. The radio should come through the speakers in the van and the DVD will only play through the headphones. If it doesn't work then you could have a problem because this all I have to do to make mine work.