SITL on Hardware and Airsim with Unity

Hello, I am attempting to connect Airsim Unity with ArduPilot SITL on Hardware.
However, there is a significant lack of information available.
Are there others who have faced similar challenges or have successfully connected Airsim with Unreal or Unity?
I need some assistance.

Hardware Board: CUAV Nano v5
GCS: Mission Planner
The setup consists of Airsim with Unity.

On Windows, I used Ubuntu through WSL to connect the existing SITL to Unity.
The GCS is run on an external computer and connected via UDP communication.
The SITL on Hardware follows a similar format.

Hello,

Airsim is abandonned by Microsoft …
For airsim and Unity you need to refer to Microsoft documentation as that is their work and we got no inputs on this.

For now, we don’t support yet (or I am not aware of somebody trying) using an external simulator in combination to SITL on Hardware.

Thank you for your reply, khanyr.
I thought airsim, which can utilize unity and unreal, was very scalable. It’s a shame that support isn’t available anymore.