https://www.larazon.es/tecnologia/inteligencia-artificial-sencillo-truco-activar-copilot-windows-11-espana_20231003651b1e9890d39d0001e6eff5.html
microsoft-edge://?ux=copilot&tcp=1&source=taskbar
got it working on my PC, now wondering how to access it programmatically...
Create a direct access on the desktop that you can move to the taskbar:
C:\Windows\explorer.exe "microsoft-edge:///?ux=copilot&tcp=1&source=taskbar"