Should work with anything that has Component Audio & Video Output as well. Example of such a cable: https://cdn.shopify.com/s/files/1/0036/4806/1509/products/m000507857_af2e5443-b937-48f3-bce2-bdcdf507eb11.jpg

It depends, if you are chatting through the speakers, yes, if you are chatting through the headset, no. You must also remember that your voice is not recorded unless you record yourself separately with a microphone. Basically, you can say: It records everything that is transmitted via HDMI, i.e. everything that is output via the TV speakers.

According to my information, this also works with the Nintendo Switch.