I have a heated 4 wire NBo2 hooked to the pcm. The innovate WB is only hooked to the gauge, and then the 0-5v output wire hooked to the egr pintle pin on the 7427 with the required bin mods to datalog it.
I did notice, the virtual gauge on the laptop for WB, and the gauge itself are not reading exactly the same.

I noticed on your screen the nb o2 volts are doing the same as mine diping down into the double digits. have you noticed any issues with this?
I'm still a noob at most of this and dont understand what you mean.