Apple Watch sleep data differs between Watch 6 and Watch 11

watchOS 26.1 : Sleep data (Respiratory Rate: Sleep, and Heart Rate: Sleep) for same person as measured by Apple Watch 6 is different from readings on Apple Watch 11.

The sleep data measured by Apple Watch 6 is different from the values of sleep data (Respiratory Rate: Sleep, and Heart Rate: Sleep) for same person.

Regardless of the subjective feeling of more accurate data in one watch than the other, it is clear that the data recorded by both watches must be the same. Having different data recorded by the two watches is not expected.

Anyone else.