the sssnake SK366-5-YEL MIDI

All I can say is that coloured midi cables are the solution if you're dealing with many hardware synths in your studio. I use white midi cables to connect my synths to the midi output of my Synthstrom Deluge sequencer (a very versatile sampler/sequencer in one dedicated device) via a Kenton THRU-12. I use the other available colours of the sssnake midi cables for sending the midi outputs of my hardware synths via a Kenton MERGE-8/4 combo to the midi in of the hardware Deluge sequencer. Each synth has its own midi cable colour. Same colours for synths when one is to the left andcthe other is to the right of the Kenton MERGE-8/4 combo.

One drawback is that the merger mixes midi clocks. I have two Korg Prologues that keep sending midi clock messages. I solved that problem by using an Arduino Uno with a Midi Shield running a Midi Clock messages suppressor coded with the help of ChatGPT. Very simple code.