Aspies have a hard time with communication and focus. We often think we are clear, when in fact we are not. And we don't understand. We think, "but I told you!" And then we want to give up because we feel we have not been listened to.
So never be adversarial. Aspies are sensitive to criticism. Rather, if you tell the Aspie that "I know you think you are communicating to me, but I honestly can't figure it out" etc. "help me understand" -- in other words, if you are kind and work collaboratively with the Aspie, you'll eventually understand each other.
I hope this helps. I am an Aspie and it takes me a lot of effort to focus.