Data available in the flow app is on Bosch flow app servers not stored on the phone so based on the above I see no way the bike could retrieve it.As far as I can work out it is the bike that combines data from the phone...ie gps...and its own data. It accesses the phone gps data because the flow app runs in background and has that permission. So the bike is not taking data from the app per se. In terms of how the Bosch System works I think any HRM would need to be paired to the LED Remote and that HRM would need to allow capture/ storage of its output by the bike. ........just my thoughts based on how I see the interface to the Bosch system working....could be wrong!!