Yup, its about as slick as you could ask for. They appear as a single device to anything connecting and then distribute the left/right channels between each other. I've also got the Apple TV set to use them as its default set of speakers, and that handles ARC over HDMI from the TV to send audio from anything else plugged in to them.

Even cheapo BT speakers can “team” together to make stereo. I think it comes standard in BT speaker SoCs and that’s why they all do it.