How to get Activity Results outside of Activity Scope

Scenario

I have no access to any sort of scope, consider my code is being called using a ClassLoader, code's in a dex file.

Expectation

Am hoping sort of a Reflection or an Hidden API way to do this.

Possibility

I am not sure but maybe we can use SendIntent, PendingIntent or something like that

Notes

• The activity is not a FragmentActivity
• I have no access to any change to current Activity
• I have Access to everything (READ ONLY)

PS: it's an experiment for knowledge, do not downvote if you think it's duplicate, it's absolutely not. I checked and tried everything on internet.