I'm a total newbie but I think I can help you a little
awaiting for an expert feedback
for your request main information are missing
What is your wideband System ? zeitronix, AEM,... ?
What is your car ? (for sensor location)
I think wb sensor won't like the T° as front sensor location on wrx for exemple
Exemple I can give :
On a GT (GC8) with O2 after turbo on DP)
with a zeitronix ZT2
you can plug the WB O2 sensor in the factory bung
You use NB emulator from ZT2 controler to supply the 0-1 v on the genuine connector
and You can use the ZT2 output (serial - interface - usb) to connect to laptop
And you add this input (on laptop) as external sensor in RR
And it works fine...