It is a month later again, and the tour is reaching an end. We, the audience, are out front again, watching a performance of Nothing On that has reached the point of complete and hilarious deterioration. The business of performing the show has become subordinate to the business of solving personal problems. Dotty refuses to come out of her dressing room. Garry is now drinking Selsdon's whiskey.
Scenery collapses, and props explode.
Practical jokes have become common, and actors are now taking verbal, and sometimes physical, cracks at each other both backstage and on stage. Normal rules of logic and response don't apply anymore.