I'm not entirely sure what you meant, but:
Neither the Garmin Connect service ‘in the cloud’, which may be accessed with the Garmin Connect online user interface in your browser, nor Garmin Connect Mobile apps running on (Windows 10 Mobile, iOS and Android) mobile devices, will stream data from a connected vivosmart. In other words, they will not display your current heart rate or take a real-time data feed directly or indirectly from the HRM.
All heart rate information the Garmin Connect will present is historical, and only updated every time the vivosmart is synced (with Garmin Connect Mobile or Garmin Express) and all data in scope is uploaded to the Garmin Connect database ‘in the cloud’.