Backdoor way to get Cronometer calories to Garmin Connect?

Does anyone know how to get calorie information from Cronometer to Garmin Connect? I tried connecting Withings/Nokia HealthMate to MyFitnessPal, and MyFitnessPal to Garmin connect, and then all of them to Apple health, but I don't see the calorie data populating in Garmin. Any ideas?

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