Just for switching between them! So, if you’re just connecting to the same device over and over, it’ll automatically reconnect to that one. But if you want to switch to a different registered device, you’ll have to click disconnect and connect on your own via those two devices. Unless the first device is totally off.
The Bose headphones handle this a bit more elegantly, but it’s really not that big of a deal.
Hope that helps you out! Thanks for reading and for the question.