i use roon so i just run lan cable into gustard, then take left & right xlr’s out from it into analog balanced inputs of the h190
but if you must use the node 2i, then you use it as a streamer (in order to use blu os as the interface software, which presumably you are used to, and have favorites saved on etc etc) to feed the gustard via the rca digital out, into the rca spdif digital in on the r26, then as above, take the left and right analog outs from the r26 into the balanced inputs of the hegel