Aang has been talking to Korra for years - she just doesn't know it, and he's waiting patiently for the day that she will realize that he's here to give her advice when she needs it. He hadn't expected her to realize her spiritual side so late, but then again, it had been so easy for him -- he realizes this now, that he struggled with the physical in the same way she fights with the metaphysical, and until she realizes that she has to stop pushing and open up.

She presses hard against the world and it pushes back until she can go no lower - and that is when he reaches her, when he smiles and shows her all of the Avatars around her who are available for counseling - and it is worth the wait, he thinks; he is so proud of his successor.