Recording external audio with effects with overbridge through DT/DN/ST

I have a question that probably has been answered somewhere before but I can’t find anything.

I have a Digitone, which I use as an audio interface.

So my question is this:

Say I have a simple audio track with a recorded drum loop in Ableton.
How can I send this through the Digitone’s out, then through a guitar pedal and then re-record the input into a separate track?

Or, to make it even more simple:
How can you choose what to selectively send or exclude through the main TRS outs? (since monitoring can be done using the headphones)

just a bump to this
is no one else having an issue with this?