blah blah blah sounds like a bunch of red herring arguments.
Garmin’s HRV/HR/power machine learning algorithms are working well for me, have been for about 2.5 years. Firstbeat has published papers with high-level algorithm details. I don’t care how much TR points to its mountain of data, coulda shoulda woulda, why does TR devalue aerobic endurance in its training plans? After all, we are in the LT1 w/o blood testing thread. And TR isn’t collecting HRV data yet, is still working on higher priorities, and while TR has stated that adding HR data is important for the future it is not here and none of us have any idea of when it might happen. A year ago they were going to support outside workouts, and a year later it morphed into waiting for Levels 2.0. I’m sure that will be a nice improvement, but bringing new software to market isn’t easy.
I’m more interested in living in the real world and using what’s available now. And I can tell you the Garmin stuff works, for me, no matter your attempts to cast FUD.