According to the release notes, the Fenix 7 supports CIQ System 8 starting from version 20.16 (https://forums.garmin.com/outdoor-recreation/outdoor-recreation/f/fenix-7-series/403727/fenix-7-fenix-7-pro-system-software-20-16).
However, when installing a data field that uses sensor pairing ([https://developer.garmin.com/connect-iq/core-topics/pairing-wireless-devices/), the user is not prompted to pair the sensor. This functionality works correctly on Edge 1040.
In addition, the Connect IQ category is missing from the Sensors menu on the Fenix 7, which means it is not possible to manually pair the sensor after installing the data field. Using the Search All option also does not trigger the pairing (AppBase.getSensorDelegate() is never called).
It appears that sensor pairing support is not available on the Fenix 7. However, based on the SensorDelegate API documentation, this feature should be supported on this device.
Fenix 7 firmware version: 21.19