Unfortunately you can’t connect your iPad via USB direct to your PC and expect it to communicate via MIDI just like that. You usually need a 3rd party app to get it to communicate. Or a specialized midi cable such as the ones from iConnectivity. A third option is just to use RTP MIDI which is basically wireless MIDI via a network. That’s what I do with a small wireless router.
But some questions…you say you have the iPad connected to your Nord and the Nord is connected to your laptop.
Does the Nord support MIDI Thru? If so, can it pass MIDI coming in from your iPad back to your laptop? If it can, then you could just arrange for your iPad to send on a channel that you’re not using and then have Gig Performer respond to program changes on that channel only
Do you have an external midi audio interface? If so you get a midi merge 4 into 2 (suggestion) — and then with an irig midi — you can hook your iPad to one of the “IN”s on the midi merge along with your keyboard midi sends —- then when you click on a program in your ipad - it sends midi to gig performer… then have the song or rackspace send the appropriate patch to your keyboard via midi out. That’s what I do. So my source of truth for all patches and midi program changes to my keyboard is done through GP.
I do! My iPad runs OnSong as a master midi controller and calls up programs on GP running on my Surface Pro 8. It also calls up the correct program on my harmoniser and switches harmonies on and off according to widgets mapped appropriately in GP. I recently switched from wireless to Ethernet from the iPad and into into a powered hub, and this is now running faultlessly. I do use Bome Box as part of the routing, with Bome Network running on both the iPad and SP Pro 8. OnSong on the iPad is a true master midi controller.
You are using a Bome Box to make it happen so you still had to use a midi interface of some kind. You still cannot connect directly using only a USB cable which is what muddyhopkins was trying to do. I probably should have been more clear about that initially.