Hello @ZELJKO_G welcome to Zwift forums.
In the same way that your watch sends outdoor activities to the Garmin Connect service - Zwift can sync your indoor rides to Garmin Connect as well. Here’s how to enable activity sync to Garmin Connect, Strava, and other third-party partners.
Once you’ve connected to Garmin in that way, this is how it works:
- You save your Zwift activity on your AppleTV.
- The Apple TV uploads your ride to Zwift’s server.
- Zwift’s server sends your data to Garmin’s server.
- Your watch is not involved in the Zwift > Garmin data transmission.
- Don’t install Garmin Connect on your AppleTV / PC / whatever device you use to run the Zwift app. That will get in the way of the data sync and cause other issues, like hijacking the trainer’s Bluetooth signals.