Garmin->Strava->Intervals sync for indoors activities

Hi,

I’ve searched this matter no only at Intervals forum but no success.

1)How can I make Strava to tag an indoor activity coming from Garmin Connect as Virtual Ride or at least checking the Trainer box?
I know this happens when coming from Rouvy ( that maybe because it has distance, speed, altitude, etc…).

  1. In that sense I wonder when to use the “Trainer” tag instead of a Virtual Ride or Virtual Run.

Thank you,