I use the "Bike Indoor" activity on my 965 for spin/trainer rides. Obviously this disables GPS (although I can't find the setting to turn it back on?), but it also apparently disables temperature recording?
when I go into the activity, then "bike indoor settings" and then scroll down to "record temperature" it is toggled ON but greyed out with a subheading showing (one of) my Tempe sensor's name. I am NOT getting temperature recordings during indoor rides though, probably because the tempe device is not in range. I get temperature readings on outdoor rides even without the tempe nearby.
why is this set that way? Just because I have a tempe as a sensor I can't use the internal thermometer to record temps? honestly, that's about the only time the internal thermometer sensor is even accurate as it is not impacted by sun or by my skin temperature (I put the watch on the handlebars when I cycle indoors).