According to Osho, yes: combine depth with intensity—deep and fast—so all your energy fuses with the breath. This total engagement deprives the mind of any other task, dissolving thought-activity. Whatever faint residue of mind remains can then be turned toward the inquiry “Who am I?”, making the meditation swift and penetrating.
Breathe big and strong, quickly, so your whole mind stays with the breath; then use the tiny leftover attention to ask, “Who am I?”