Digitone 2: Unclear / Uncommon Audio Routing

When i deselect a track from the compressor, is it then connected to what? Or is it also a send EFX ? Cant see anything in the manual!

I made a test with the external signal, when i deselect it from the compressor i have still a signal at the main and the Master Overdrive is still in the signal chain.

On the Syntakt i can pass the “Analog Chain” that is is very understandable

As i currently understand: if a signal is not routed to the compressor it will be connected to the overdrive, so that it is not possible to pass the maser overdrive for a track or the external signal?

Or have I missed something?