> While I guess hours response is an outlier in clear sky conditions

It definitely is an outlier, maybe partially due to conditions (I wasn’t there, just was someone who received the other party’s messages way late), but that’s the point. An emergency situation is already an outlier as is, the last thing I want is to trust a device which has a definite probability of failure again. Screw “me” over once, shame on you. Twice? Shame on me.