I have noticed that recorded activity stress level saved in TD is always higher than the workout editor in TD (e.g. 60 stress for a workout calculated at 45; 90 for a workout calculated at 60 stress, even though I quit the workout 10 minutes early). Even stranger, the TD activity intervals all show average watts 15-20 points below the workout interval target.
When the activity is sent to Garmin Connect from my bike computer, GC TSS matches pretty closely the stress calculated by the workout in TD.
I don’t have an HRM connected to my TD device, so it can’t really take that into account.
Is there something different about the way activities calculate stress compared to the workout editor?