The headband connects the two ear modules via what looks like a regular USB C to USBC cable. When folding the headset or taking it off I must be paranoically careful, lest one of the ear modules gets disconnected and the whole set ceases to function. It will sometimes get to a state where the phone/laptop still sees the headset as connected via BT but audio on the headset is not functioning.
This is a daily cause of hassle for me, not anecdotal, otherwise I am very happy with my headset. I have tried to reeducate myself a bit, but at this point I think it is an important design flaw.