Fenix 6S Pro & Garmin Cadence sensor 2

I am not familiar with the Cadence sensor 2. I use generic ANT+ accelometer-based cadence sensors for footbiking. The cadence sensor is on one leg and picks up the cadence only if that leg is kicking. Half the time that leg is on the plank while the other leg is kicking, and cadence is 0. The average cadence is about 50-60 is also what I see in real time on the watch. I am confident that the average cadence excludes 0, because I can be sure that half the time, cadence is 0. If the average would include 0, it would be 25-30. Does this make any sense? It is a bit hard to explain.

Thanks. But in the case I'm talking about a bike cadence sensor. When not pedalling you have zero cadence. I'm trying to work out if these 0's get included in the average Cadence calculation or not. 

It is a regular bike cadence sensor I am using (strapped to 1 leg). It works because the rotating leg motion of kickbiking is similar to normal cycling motion, and the sensor does not care that it is not actually mounted on a bike frame.

If you have a sensor that works with a magnet on a pedal and a sensor on the frame, it should not make a difference.

You can test if the average includes 0, on a normal bike, by pedaling while keeping an eye on real time cadence, then starting a new lap and rolling without pedaling for as long as you can, then end activity and review the cadence for the 2 laps and the overall cadence.

Aha understood. And good suggestion about doing two laps, one with and one without peddling then checking the difference in cadence.