> the "advanced flow" for power users is delivered through Google Play Services, not the Android OS. That's the whole game. What is the source for this claim?

> the "advanced flow" for power users is delivered through Google Play Services, not the Android OS. That's the whole game. What is the source for this claim? I can believe it, but I haven't seen where the claim actually comes from, and it doesn't seem to be mentioned in Google's announcements.