How to get Garmin to estimate speed and distance for indoor ride?

Hello,

I am using my Wahoo Kickr Bike as a power meter only connected to my Garmin Edge 520, so my workouts will upload to Garmin Connect. I use MyWhoosh for uploading to Strava and Intervals.icu, so they do a virtual calculation of speed and distance.

Is there a way to get the Garmin Edge to estimate speed and distance based on my power (or a Connect IQ application someone has made)? I can't connect the Kickr Bike to my Garmin as an indoor trainer, as I specifically don't want to use ERG mode.

Appreciate any help!