AAB Split build fails on device with UnityStreamingAssetsPack

Please see pic - large project on left fails, smaller project (less scenes) on right works. How do I fix?

UnityStreamingAssetsPack is a fast-follow asset pack. It needs to wait some time to be downloaded.

Here is the documentation about how to query status:

Before the first call of Addressables happens, UnityStreamingAssetsPack need to be available.

Using the google play interface to install on device the fast follow was clearly done as a separate download - right after the install time downloaded and before I ever started the game.

Error Unity RemoteProviderException : TextDataProvider : unable to load from url

Google search shows this being an issue back in 2020.

I cannot reorganize my project. The bundles created by unity should work.

How is it possible in 2023 there is no definitive walk through or sample code that actually works with Split Application Binary/AAB on a large sample project that creates BOTH UnityAssetPack, and UnityStreamingAssetsPack bundles?

Please don’t point me to the online documentation it flat doesn’t work out of the box as the docs claim.

In the end this post has my resolution to split AAB not working…