How do we figure the odds of making this runner/runner draw

[Carmine]

Hero holds AA
Opponent holds T8

Flop: 79J

On the turn I need to hit and Ace or have the board pair then I need the other outcome on the river (IE if and Ace hits the turn I need another ace on river or board to pair. If board pairs on the turn I need to hit same paired card to hit river or an ace.)

It gets confusing for me because the number of outs change depending on which event occurs first.