Fenix 5x with latest firmare, paired to HRM Swim with latest firmware used in Pool Activity with the Rest Screen data fields modified to read Interval Max Heart Rate, Rest Timer and Interval Pace - upon finishing the interval Interval Max Heart Rate reads (default?) value 120 until HRM Swim data recovered. Then the field updates to a value that could be consistent with the interval. However, x seconds after the Interval Max Heart Rate field updates to read a value consistent with the ongoing / ie. current rest heart rate.
Expected behavior would be not to update the Interval Max Heart Rate field during the rest and allow the user the necessary time to examine the value at will.