I know people don’t like to create accounts, but Larian seems to be doing fine when I created the vault account(for their prior kickstarter redeem etc.) It doesn’t work with launcher and I contact support to then know they have a new system so they can link steam/twitch/gog for their game specific feature(cross save and twitch integration). So if you ever want to do a session in the future using the twitch integration, you would have to register account to be able to link and use that. It lets viewer check character build/inventory and quest logs, so you can have like 3 viewer like your buddy playing together while you control the choice, your buddy can vote for decision making or direct their character’s combat choice. At worst you can be the only viewer to your stream and just use it as a 2nd screen to have over view of character build or inventory.