Overlay control of main discord window

Hi there

I use two monitors, and on my second monitor I have Discord full screen'ed.

I have an idea of being able to control the main window (on 2nd monitor) via overlay (in game, "main" monitor).

This would mean that if, via in game overlay, I choose to look at a friends chat, or other server, the change would be replicated on the main window, allowing me to resume looking at the game, but also being able to read what messages come through.

I realise I can run a game in windowed mode, and just use the mouse to make the change

but that kinda defeats the purpose of overlay lol

Hope I'm not asking too much!

Thank you

Kayne