Order path

TVate Team & Community, what is the path of orders? For example, if someone is trading on the Windows App, when one clicks on Market order to Buy, what path does that request take?
Does it go to TV at all or does it go straight to CQG, and CQG routes it to the exchange?

I assume limit orders are held at the exchange but what about Stop orders? Are they at the exchange or do they sit at TV or CQG, waiting for triggering?
I don’t have any issues. I am curious how this works.

Can TV or anyone answer this one?