Two passthrough issues now that my DeoVR versions support it:
For the chroma key, the Hue setting should be out of 360, not out of 100. 360 is the standard range for HSV colors and literally represents degrees on the color wheel. Right now the value being out of 100 means you can't copy the hue from any paint program without having to convert it from 360 down to 100, which shouldn't be necessary if Hue were using the standardized range.
The DeoVR 13.4 app that runs through Quest Link from the Oculus app on the PC does not trigger the passthrough camera when passthrough is turned on. The chroma key still functions to mask out the video background, but the background stays black without any passthrough camera feed. The 13.4.1 version that's on the Quest 2 running without Quest Link does trigger the passthrough camera properly.