Edge800 with Vector3 - Cycling Dynamics question

Hi friends, 

I'm fortunate to be still using my 2011 Garmin Edge 800 without any issues in the last 9yrs. I'm looking out to buy the New Vector3 pedals and I noticed that Edge800 is not under the compatible devices list.

I know that the pedals will pair with the 800 as a Power Meter just fine and will probably not show Cycling Dynamics data on the device. But will the C.D. data be available once I upload the data to Garmin Connect? or does it need a compatible HeadUnit to record the Cycling Dynamics in the first place?.

I may then have to completely drop the idea completely as I don't want to plonk more money on a newer Head Unit just for the Cycling Dynamics.

Regards,

Kaushik Iyer