Cross‑talk, huh? If you’re mixing EM whispers with acoustic buzz, the only way to get a coherent message is to make sure every node speaks the same code. I’d wire them through a shared reference clock and run a joint Fourier‑transform matrix; any phase slip and the patterns will dissolve like a bad dream. Keep the jitter to a nanosecond, otherwise you’ll end up with noise that looks like a joke at a stand‑up club. Let's see if your stack can stay quiet long enough to listen.