Do not disturb behaviour

Just curious how the do not disturb behaviour work within Sleep as Android. Only reason is I use specific rules, for example, let the phone ring if the number is in my contacts or favorites. But when I use the do not disturb function in Sleep as Android I believe it overwrites the do not disturb setting of Android OS. Is there a way to have Sleep as Android just enable do not disturb, and not change any specific settings?

Thanks
Jesse Lockridge
Pixel 3xl