This is more a general question of whether it is possible to share persistent/coredata from the main app to Screentime-related extensions such as DeviceActivityReportExtension.
I've set my code up (e.g., App Groups, files to different targets, using nspersistentcontainer with app group url, etc.) in a way that it builds, and the extension seems to recognize my CoreData schema (able to query using fetchrequest). But the data returned is always null. So i'm wondering if it is even possible to READ app data from the extension.
I understand it is not possible to write or pass data from the extension back to the app. I've also been able to read data that was saved in main app from UserDefaults in my extension.