I'm half asleep now but I will give some info now and look at it better in the morning.
Active Presenter is free and will record multi audio devices to multiple audio tracks that you can adjust before render.
VoiceMeeter Banana will let you have other audio devices like VB Cable, Hi-Fi Cable you can get these on the same site.
I have my Windows set to VB Cable and Reaper Set to VoiceMeeter AUX ASIO, Biab set to VoiceMeeter ASIO.
Check it out and see how you go.