Importing .fit files from the Bosch Flow app into Garmin Connect works but the result is not very useful.
- the Bosch .fit file classifies the ride as 'ebike ride', which works with Strava but not with Garmin. Garmin expects 'biking' and imports the activity as 'other' which removes some of the typical biking figures, like rider performance. If you have a bike configured as standard equipment in Garmin, this will also not connect to the imported activity
- the cadence data is recorded in a non-standard way in the Bosch .fit file, there is only an entry when the cadence value changes but many missing values for constant cadence. This imports into Garmin as a sort of staccato cadence constantly jumping between zero and the correct value
The best way to get your data into Garmin is going to
GOTOES | Strava Tools and repairing the .fit file there. Then import the repaired file to Garmin and all is well.