I can’t move it. But, in a nutshell, you use OBS to receive the video from a video source, and have a DAW running (any DAW, it doesn’t have to be Ableton) to receive the audio from your audio input (from an audio interface).
Obviously, if you do this, you can record the audio in the DAW and the video on OBS, but they are disconnected.
The idea is you can join these applications by connecting a monitoring output from the DAW to the audio input of OBS. To do that on Windows or Mac, you need a separate application.
For Windows you can use tools like VoiceMeeter, ReaStream, or Jack
For Mac you can use Loopback.
Modern Linux distros have this capability built in via Pipewire, and you can use qpwgraph to configure the connections (install with sudo apt install qpwgraph, etc. or your package manager)
A great explanation, using Reaper as the DAW, was put together by @TheMadman_tobyjenner
Open Mic Tech Talk (Advanced) Connecting Reaper, OBS and Zoom Using Reaper ReaRoute
Cheers,
Keith