On Forerunner 955 you can choose if you want Daily Suggested Workout target type to be Power or Heart rate. That way you can use this function even if you don't have power meter.
On Edge 1040 I can't find such option. Even if I unpair my power meter then target is still Power. So when I ride my non-powermeter bike I can't use my Edge
Please add option to choose Target Type Heart Rate for Daily Suggested Workouts.