Hi,
As the iConnectivity mioXL is a MIDI networking interface with 22 MIDI ports and the HX Stomp has MIDI IN OUT/THRU on DIN sockets, surely it’s just a question of hooking it up. Although, it does depend what you are wanting to do with the Stomp MIDI options. You may be better off consulting the manual for the network hub, or proving a little more info about what you want to achieve.
Hope this helps/makes sense.