Why Put on the Robe at the Sound of the Bell?

10/15/2023, Kokyo Henkel, dharma talk at Green Gulch Farm. Case 16 in the Gateless Barrier koan collection: The world is so vast and wide - why do you always put on the robe at the sound of the bell?...When in the heard there is just the heard, there is no "you" in relation to that.