There is no first-to-touch provision in NFHS. As long as the player is in bounds, he can touch the ball legally.
To be in bounds, he does not need to establish with both feet. One foot is all that is required as long as no part of his body (to include the other foot) is touching OOB.
You can always fix the sentence.
In college, I believe it makes a difference how A2 got OOB in the first place.