I currently have a Garmin watch (currently Forerunner 955) and a Garmin Index scale. Everyday my health data from Garmin is synched from Garmin Connect to TrainingPeaks. However, they synch separately and I end with two different entries. One with the weight metrics from the Garmin scale, and another with the sleep data and other metrics from the forerunner. I believe all health data should be incorporated into a single daily file, at least for the first weigh in of the day. I understand some people might want to weigh themselves more than once daily, and that could make it into a second file.