If your mind is related to something outside itself, that mind is a small mind, a limited mind. If your mind is not related to anything else, then there is no dualistic understanding in the activity of your mind. You understand activity as just waves of your mind. Big mind experiences everything within itself.
As for me, I sort of like the old zen story where a student asks the Master what would happen after the master died. “I don’t know”, answered the master. “Why not”, asked the student, “You are a master aren’t you?” “Yes, but not a dead one.”