Based on my experience I can say on iPhones, Sleep Focus overrides Do Not Disturb (DND) when both are scheduled to overlap.
Nevertheless, I will try it out tonight.
Here's how it should work:
- Priority: Sleep Focus has a higher priority than DND. This means even if you have scheduled both modes to be active during the same time window, Sleep Focus will take precedence and control how your phone behaves.
- Smart Activation: Both Sleep Focus and DND can be activated manually or automatically based on schedules, locations, or app usage. If you use Smart Activation for both, Sleep Focus will always take over during overlapping times.
Therefore, if you want stricter silence during sleep, it's recommended to use Sleep Focus over DND. It not only silences notifications but also dims the screen, hides notification banners, and reduces lock screen visibility for a more sleep-friendly experience.