Since you have a Dante card, you can use Dante Controller to make a loop that the H9000 can use to route audio from FX Chain outputs to inputs.
I've attached a preset file for algorithm #9101 Digital Delay. Using that preset in a feedback loop allows you to use the mix knob as a feedback % knob. You can add three more algorithms to the chain that'll effect the sound every loop.
In Dante Controller, assign your H9000's Dante transmitter # 3 & 4 to Receivers # 3 & 4, and to your DAW / monitors. This only works if the H9000's Clock Source is set to Dante. Otherwise there is a lot of white noise.