100% positive that TR mobile app receives total power. Here you go:
Last night I was outside doing a workout and then did some single leg drills. It definitely takes at least 10 seconds for the Stages to recognize that I’m only pedaling with the right leg and start sending power/cadence data (to my Garmin 530). Believe the post above also shows (BLE to TR app) a delay from the time you start pedaling right-side only, and the time the Stages starts sending power/cadence data.
Garmin 530 recording from last night’s 5-minutes of single leg drills, where it took ~5 seconds to unclip and switch legs:
Notice the long pauses without power/cadence? Its like the Stages “gets confused” and takes a short amount of time to realize I’ve gone right side only. Annoying.