Oh, so my double y-split solution DOES work for XBone? I'll have to post the video.
The DSS 2 might have a combined optical/aux-in port like the Recon3D and Mac computers, so I'd rely on pictures rather than a features list to determine if the DSS2 has a separate port for input. I've never owned a DSS2 myself... I'll need to check the DSS again tonight once I'm off work.
Q1: I haven't tried it yet, but I don't see why it wouldn't work.
Q2: We're curious about the DSS1 not the DSS2. Can you tell us if the DSS1 can combine the chat audio like the DSS2?