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. Current copy is bounded to showing source context and a narrow founder-dogfood read.