Might be properties of self oscillators and not possible with linear oscillators.
“If net energy is flowing into a given metronome’s swing (for instance, because it’s coupled to another metronome, from which it can absorb energy), then as its amplitude increases its frequency changes. This changes the phase relation between the coupled metronomes, which changes the energy flow between them. Under certain circumstances, the metronomes may eventually find a steady state, in which each dissipates energy at the same rate at which it receives it from both its internal spring and the coupling to the other metronomes. The amplitudes and frequencies then remain constant. This steady state is what you see when the metronomes finally become entrained.”
Oh I think you’re there. You got it. I just like authoritative answers because it’s a reference point to compare with. As this was the newest and best cited answer I’d seen it ‘feels’ cutting edge
and yes, I think you got it.