Human Design: Compatibility

So, the deep dive continues! I got into channels and gates — yes, I now know the difference!
Channels are the lines that connect one center to another: On an individual chart, only between defined centers; in compatibility charts as a matter of two gates completing each other to form a channel, i.e. it can be a gate from one partner’s defined or undefined center meeting with a compatible gate from the other partner’s defined or undefined…