How to know if voice assistant is triggered by companion app

I’d like to know when a voice assistant is triggered by the companion app.
For the Atom Echos I can get the info with the assist in progress sensor. Is there something similar for the app?

Can you describe your usecase?

I personally use nodered, where I can see what input it comes from, but as far as I know, it’s not possible to see what triggered the voice assistant