Hey, yes, Raspberry Pi and Patchbox OS can help getting the devices to communicate.
On Linux, some virtual MIDI connections have to be made first, to get the messages flowing between the devices according to your setup requirements. This is done through ALSA’s aconnect utility, there’s some GUI applications that make it easier to use, like aconnectgui or patchage, and there’s also amidiminder by @mzero that runs in the background and automatically makes the connections according to your needs as soon as the system starts or the devices are hot-plugged.
So to sum it up, what you need is the amidiminder utility. 
The linked thread should contain the information to get you started, but of course feel free to ask any questions.