The companion app on my Galaxy watch is wonderful for firing off Assist commands. However, if the watch loses connection to my phone, the result is “Assist couldn’t reach Home Assistant, check your connection.” There’s no automatic retry - the app is then stuck like this even when connection is restored. The option to kill the app is buried deep in the watch settings, so honestly I usually just restart the device. This is easy to reproduce by turning off Bluetooth on your phone.