That was earlier data that was proved wrong. Look at the link I sent. Turns out Garmin isn’t using the ant+ data correctly to deal with dropped ant+ packets so when a garmin is set to record HRV to the FIT file it will record artifacts. The connect IQ app handles the data correctly so won’t have that artifact issue. (the ant+ protocol makes this possible to correct without any loss in data, garmin is being lazy and not correcting for errors)
1 Like