Hi.DC Rainmaker's Answer: Nope, they don't actually record continously - even if the GPS is on. Hence my frustration point. To illustrate this, when I was on the plane and the unit couln't get signal (middle section on a widebody), none of the HR/Temp data was recorded. Same goes for the freezer tests.
Even if Garmin intended for this behavior, I'll agree it's a problem (user perspective) that should be fixed... into the table it goes.
I'll phrase the problem this way: "ANT/HR and Temp/Baro Sensor data is not recorded when there is no GPS signal"
Have you confirmed this behavior? I haven't tried yet.
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Hmmm. I no longer see an "Edit Post" option for my Post #1 with the Table in it. I wonder it I hit an Edit limit or something...