I solved this challenge with Exeldro's Audio Monitor plugin and a VB-Cable. All my audio sources go to Tracks 1 and 2 except for Zoom, which only goes to Track 1. My stream and recording use Track 1 only. Track 2 is directed by Audio Monitor to the VB-Cable and this is what I choose as a "microphone" in Zoom. Since output tracks are post effects, my delay is preserved.