Can Sandboxed Google Play Apps ''talk'' with each other?

Ajlok

So it is recommended to use the sandboxed compatibility layer and the play store to update and install apps instead of the aurora store. I have the sandboxed google play installed but granted no permission only the network permission for the play store. But sign in is not possible. as i remember correct google services framework need network acces to? This is the part where my question comes. If i grant services framework and the play store the network access is not very risky for somebody like me, who uses google fotos without network because im calm to know that it cant send nowhere the data. If i remember correctly it is possible for apps to ''talk'' with each other and let the other app with the permission send those data? So if google fotos detects services framework or the play store with network access can it led them send anything instead? Hope this understandable.
I would appreciate any help

mythodical

Apps can share information between each other, with mutual consent, via inter-process communication (IPC). There may be limitations on the breadth of data shared, determined by Android or GrapheneOS (I don't know), but ultimately data can be shared. If one of these apps has network capability, I view that as a weak link with respect to privacy.

Personally, I have GSF installed (without permissions) in order to use the Google Camera app, but I have opted to not install the Play Store or Play Services.

Ajlok

mythodical Thanks for the reply. i believe that you are right and in a privacy way its bad. because when the google apps can communicate it is very possible that they use each other to send anything out. this is something google would do.

CoffeeTime03

Ajlok if you would like to know more, please read https://discuss.grapheneos.org/d/1549-more-questions-about-ipc/3

Ajlok

thx