As a Netflix subscriber, that would be news to me.

I see it's only a limited selection. I have Band of Brothers, Ballers, and various other HBO shows in my Netflix account.

Not here (Germany).

HBO isn't available at all on it's own. It's exclusively sublicensed (until the end of this year) to Sky which has a terrible terrible user experience and of course is another subscription.

Two days ago there was an announcement that HBO Max is to start in Germany in January. Let's see how that develops after the acquisition.