For context, see https://groups.google.com/a/google.com/d/topic/better-together-dev/nHWZg-7fme4/discussion.

We are currently trying to connect to a device right after the connection to it is lost, which will always fail and waste one of our retry attempts. It also seems like it may put Bluetooth in a weird state sometimes. According to Gio, we should:

"Once the device becomes disconnected, ignore the first DeviceChanged event. That event is being dispatched because the device disconnected, not because we received an advertisement. If the device is still around, we'll soon get another DeviceChanged event and we can connect then."