Thank you. Your experiment seems to suggest this will do exactly what I want. Especially since it seemed to work with you putting the Garmin asleep. I'm running a half tomorrow so Sunday I may just tool around the neighborhood to loosen my hips and try a similar experiment with my Forerunner which is quite a bit older than your Venu to see if I get the same result.
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"It is the unknown around the corner that turns my wheels." -- Heinz Stücke