Why Garmin didn't use data from chest strap HR sensor to optimize oHR sensor accuracy

Zodios said:

Why Garmin didn't use data from the chest strap HR sensor to optimize oHR sensor accuracy using neural networks for machine learning?

Why do you think that Garmin doesn't use HR from chest straps to improve OHR?

Maybe not with neural network methods, but with conventional statistical methods.

Where do you know which data Garmin used? Do you have a source for your statement? I am sure that they also use the data from chest straps.

Because Garmin's oHR accuracy is one of the worst on the market 

I do not say that the OHR is working as expected always. I always prefer to use the HRM belt while doing sport activities in the  last 3 years owing the Fenix6. 

But, due to some other issues I had to test some days ago. I was cycling indoor using:

- Tacx App connected to the HRM belt

- F7 Solar using wrist HR sensor. No connection to the HRM belt, watch on my wrist, of course.

I cycled for around 60 minutes those two tests. 

I was really surprised how spot on the WHR on my watch was with the data the HRM belt was collecting.  I was not expecting that. to be honest. 

Only compared to Apple - Garmins ohr is better than Polar, Coros,. 
Also the accuracy of the ohr is highly indvidual since skin tone/type/temperature/placement plays a big factor. The ohr works fine for me, and is quick to pick up changes when i walk up stairs or relax - Since I switched from the standard silicone strap to the fabric nylon strap (Enduro 2) im getting way more accurate readings on my F7x
My issue with garmin is the sleep tracking algorithm.
Imagine being the owner of a watch that has Apples accuracy but Garmins sport/health functions

Garmin - Chris is Garming working on HR monitor fix?

Fix for which problem? During outdoor activities, I've never been able to reproduce a big difference between the OHR and the HRM belt...swimming and lifting weights is a different thing but that's when you should wear the belt. For my running sessions I always use the belt as it gives me all the extra data you're not getting via OHR.