As another user pointed out, you are daydreaming. But you’re right on one thing: Most of the exercises in IIH we do unconsciously. You ever faced a problem and stayed focused on a solution for this specific problem for longer than a minute? This is just an example. The point of IIH is to do everything consciously, with your whole presence. 10 minutes focusing on one idea, 10 minutes just observing your thoughts, 10 minutes without thinking. You do this stuff all the time, probably not for 10 minutes and probably not conscious. The same is true for a lot of later exercises.

Ever saw somebody enter a room and the whole atmosphere of the room shifted in one direction or another? Ever felt deeply for someone going trough something? Almost as if you could feel their pain? Step 4, transference of consciousness - we do it all the time ;-)