Same walk, three devices, three answers. The chest strap had it.
- Polar H10
- Chest strap reference
- Garmin Fenix 6 Pro
- Wrist optical estimate
- Whoop
- Wrist optical estimate
- Verdict logic
- Use the chest strap for interval and walk HR reads
DN1 does not flatten conflicting device reads into one false consensus. It keeps the source context and uses the device that best fits the measurement.