Question about Gemini + iOS

So now that we know that Google and Apple are partnering up for AI reasons, my concern is with the privacy end of it all.

I’m already a part of the Apple ecosystem, and don’t really trust Google at all re: privacy.

If Gemini is able to interact with apps, for example, how much of that interaction would be shared with Google? Or does Apple have some sort of plan in place to wall them off?