So hows the method I showed not work to send midi from one PC to another ?
If I can send midi from one keyboard to another with a "wired" connection would it not work from one PC to another ?

I have a Behringer mixer that records 16 tracks audio but has no midi record so I had to add a 10" tablet PC with the same USB midi connection to record the keyboard.
https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=405047