Hi there Billy, my name is Gerardo, and I'm an Xbox player, just like you. I'll be happy to assist you with any questions or concerns you may have.
After doing some research, it seems that currently it's not possible to stream Discord audio on Twitch. The only way to achieve this is if you and your friends are in an Xbox voice group, and your friends consent to having their voices heard on the stream.
You can see that other players also indicate the same as me through the following threads:
https://www.reddit.com/r/Twitch/comments/160r71q/im_trying_to_stream_on_xbox_and_i_want_my_stream/
https://www.reddit.com/r/XboxSeriesS/comments/1ar3935/discord_audio_on_xbox_streams/
Note: Reddit is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
Let's hope that in the near future it will be possible to stream Discord audio to Twitch natively, without the need for external hardware such as video capture cards.
Please keep in mind that in this public forum, we are just fellow players like you, trying to help other players with our best intentions.
I appreciate your understanding and if you have further questions please let me know.
Kind regards,
Gerardo.
