Set up new appliance (wg-5000) as a transparent bridge and its working as expected.
There are 4 interfaces on this appliance, can I use the other 2 interfaces to bridge another network and have the appliance scan it also?
I did try to set this up but it did not work, wordering if its even possible?
No. It is not possible. Sorry.
You can setup the other interfaces for management or explicit proxy, but you can only have one bridged interface pair (ibr0).