My 945 triggered an incident while I was stopped at a traffic light (only know this by viewing it in the connect app afterwards). I realized something wasn't right when my varia display lost the connection. I stopped and saw the notification on the watch. it had ended the activity and said it had notified my wife and I could say I was ok--which I did. My wife got no notifications (yes, she checked the spam folder), no text, nothing. No idea why it triggered, but needless to say it doesn't inspire confidence in this being a reliable feature of the watch. Curious as to the experience of others.