Dear Garmin,
All rides run from the Tacx App (Android 4.22) directly on the bike, no matter where I ride, or trainings, always upload to Garmin connect as 3 minutes Moderate, 3 Minutes Vigorous (x2) for a total of 9 Intensity Minutes. (note: Total time, distance, calories, average speed, are all ok)
I can do 1 hour, 45 mins, 3 mins, and the resulting stats are always the same.
regardless of whether my Fenix 6s pro or edge 830 does the calculations through GC.
If I go on the activity on my phone in GC, and look at the details, every ride has 3, 3, 9 as described.
Cheers, William
Neo Bike is on firmware 0.41
Fenix 6s pro on firmware 19.20 and now 19.75 Beta (no difference)
Edge 830 on 8.20