Android Mirror: Combine two existing apps to screen mirror/stream -- 3

We have two Android studio Apps.

One of them has a basic screen mirror + control function but the screen mirror function is not working well. All other functions work well.

The second app has a well defined screen mirror function which works well.

The project is to combine both apps into one: to enable the first app use the well defined Screen mirror function of the second app.
Kindly review and confirm you can do it before saying you can.
Note: one is in Kotlin and the other in Java