Jon,
this workflow kind of ties into the other thread I just replied to where utilizing the Control Pack/Routing presets as Sends/Returns vs using cues. Being able to do this in the Control Pack keeps your monitor control section of DAD a lot less cluttered and makes trouble shooting things a lot simpler. I went down the rabbit hole settings up multiple cues for hardware sends and returns and doing this work was way more simpler in the Routing Preset but unfortunately only limited to just 4 sources.