would I create a MIDI loop when creating a midi-thru on DEVICE-A to DEVICE-A ?
Yes, if it is a loopMIDI port. But Bome MIDI Translator Ports are one way and wouldn’t work anyway as one end needs to be Bome MIDI Translator Pro and the other end has to be anything but Bome MIDI Translator Pro.
What are you trying to accomplish?
Steve Caldwell
Bome Customer Care
Also available for paid consulting services: bome@sniz.biz