Why you dont just use obb files? 
The APK has a limit of 150 MB, the file is like the obb included in the AAB file (like a zip), but he obb has not the “150 MB” limit, it can contains some GB
Why you dont just use obb files? The APK has a limit of 150 MB, the file is like the obb included in the AAB file (like a zip), but he obb has not the “150 MB” limit, it can contains some GB