"I see. I'm not sure anything can be done about that."

Ziggy's a pilot now, so, indeed, he can get directions from Atlas. Instantly gets them. Not words, of course, but images, feelings, sense of orientation, so he can easily get around.

And since Ziggy's met Hiroki and the White Lion, he can probably feel that Atlas is somehow both, together. With some energy of Shiro, too.

And indeed, Ziggy can always find Hiroki in the spiritual space of Atlas.