A:Answer Those are standards for two different things. Dolby Vision is a video standard and Atmos is an audio standard.
Supporting both will depend on how you hook things up. It looks like your soundbar has HDMI pass-through, so I'd hook the SHIELD up to your soundbar and then hook the soundbar up to your TV to make sure you can take advantage of both standards. Make sure you get HDMI cables that support the higher bandwidth required for Dolby Vision. If your HDMI cable was made within the past 10 years, you're probably already all set here.
Something to be aware of: you likely won't get a ton of (if any) benefit from Atmos out of a sound bar.
The big gain with Atmos is that you can have either ceiling-mounted speakers aimed down at your listening area or upward-firing speakers that are designed to bounce sound off your ceiling and back down to your listening area. The goal of that is to create a 'bubble' of sound that can reproduce things like a plane flying overhead. Most soundbars simply aren't capable of reproducing what a 5.1.2 or a 5.1.4 setup can due to the physics of a single sound location vs multiple discrete sound locations. Still, give it a shot. If you're happy, that's all that matters!
