NC 700: Audio turns off when connected via bluetooth
Sound disappears while connected via bluetooth.
Connected to both Macbook Pro, Catalina 10.15.3, and iPhone.
Playing audio from Macbook Pro.
Headset is connected according to Mac's System Preferences>Bluetooth.
(If disconnecting from the Mac, headset says "Disconnected", so clearly connected according to both devices).
Disconnecting and reconnecting via Bluetooth works, but only for a minute before audio disappears again.
So, devices are connected, but sound disappears by itself.