I hope it is ok, when I post here, the topic is very similar.
I understand, that Sandboxed Play Services for example do not have direct access to location, files or contacts, if I do not permit it.
But as I understand, Play Services can interact with other apps a lot.
Just one example for my question: One uses Sandboxed Play Services with network permission only. And uses GBoard without network permission. Could GBoard than "tell" the Play Services relevant data (in worst case, what he or she is typing via GBoard)? And could Play Services provide those information to Google afterwards?
Or in other words: How many or what data is shared via other (Google) apps with Sandboxed Play Services?
Thank you and best regards!