NFHD5

Im a first time poster in the forum, but a casual browser of AtracLife. I found this thread while doing research for a new head unit for my truck. Im still shopping and I might get a Sony HU. I have an NW-HD5, and I was looking for a way to fully integrate mp3 file info and track navigation with the HU and HU display. And the Connects2 looks like it does the trick. Thanks for the in-depth review, MDX-400. I have a couple questions, though. (Questions open to anyone.) I noticed that you mentioned the XA-300 Aux Adapter in your Review Info. I read through the specs on Crutchfield.com, and it has RCA inputs of its own, but It did not say anything about navigation control, or HU info display. Would I be able to use the XA-300 with a 1/8th jack to RCA cable to my HD5 to get it to play, navigate and show info through my HU? Or would I need the Connects2 along with that, to control the nav. and display on the HU? Also, with the Connects2, are you able to use the HUs nav. buttons (seek, play, stop, etc) to control your DAP? NF