So OG Xbox and 360 games can't be used on console streaming?

You can't connect the Xbox 360 to the Xbox App. Only the Xbox One can stream to the Xbox App.

Long explanation:

The Xbox One has specifically resources reserved to record or stream the console's video output, so you can stream to Beam or Twitch, or record your Gameplay.

The Xbox 360 does not have these resources. And since compressing and streaming video requires a lot of CPU power, and the Xbox 360 is uses nearly 98% CPU resources for rendering games (the rest is used for Guide, Parties and background music), the Xbox
360 also can't get an update to allow game streaming.

In short: It's not possible to connect the Xbox App to the 360.

I wish to see all the OG XBOX OG XBOX 360 Games Fully Loaded on XBOX SERIES Consoles and wish to Be Partership SEGA ?

Not going to happen.The backwards compatibility program ended in 2021 so no more og xbox/360 games will be made playable on the series x/s.

The couldn't make all games backwards compatible due to technical & licensing issues.

I wish to see all the OG XBOX OG XBOX 360 Games Fully Loaded on XBOX SERIES Consoles and wish to Be Partership SEGA ?

I have 3 different set ups:

My Xbox One X, PS4 and Xbox 360 on my newish 65".

My OG Xbox One, which is set up in my bedroom.

My WIN 10 gaming laptop, which I use to either stream from either of those two consoles when people want to use the TV, or to just play PC games on the go.

For clarification: Original Xbox games on Xbox 360 require an official Xbox 360 Hard Drive be installed in the console. This hard drive contains a hidden partition that includes the emulation files needed to run the Original Xbox game. This requirement
is the same if you're running one of the hundreds of OG Xbox games on disc on Xbox 360 or if you have downloaded them digitally.

On Xbox One, the back-compatibility for OG Xbox is built-in, and the games install in the same manner as Xbox 360 back-compat games (you download it from the Store, or you insert the OG Xbox game disc).