Thanks, kellym. My question is actually a bit more complicated but I didn't want to put too much in my initial post. I eventually plan to add an IFR navigator such as the GTN750. With that setup I would probably configure the screens to display PFD and engine monitor on the Skyview and moving map on the Garmin. In that case I would want to see traffic and weather on the Garmin. But I would still like to see traffic in the Skyview PFD's synthetic vision, and not lose the ability to see traffic and weather on the Skyview's map page. It seems unlikely that any Garmin device would be able to communicate with the 261's serial port.
So I reiterate my original question - If I add a non-Dynon ADSB-OUT transponder (such as the GTX345 or GNX375) will I see traffic on the Dynon?