You have few ways to connect there -
1. RCA out from Node into Mc
2. Coax out from Node to Mc
3. USB out from Node to Mc
4. Toslink out from Node to Mc
Try it all. My suspicion is the Node into C2700 via USB will sound the best with second best option being coax into C2700. I don’t think the DAC in the Node with node’s analog outputs into mcintosh will match the digital connection.
But it’s worth exploring it all. You never know what will sound best to you.