The recapitulation features both fugal subjects concurrently. Developmental material leads to a cadenza which then opens into the recapitulation. This movement is in sonata rondo form with foreshortened recapitulation. Layton disagrees with Abraham and considers the Scherzo to be the beginning of the recapitulation. The movement is in typical sonata form (composed of exposition, development, and recapitulation). The recapitulation and coda together take up approximately another minute. Thus, according to recapitulation theory, the hiccup is evolutionarily antecedent to modern lung respiration. Haydn uses this trick of a pretended recapitulation in other opus 20 quartets. The Haeckelian form of recapitulation theory is considered defunct. Theosis ("divinisation") is a "corollary" of the recapitulation. The notion later became simply known as the recapitulation theory. The first tonic chord in root position appears towards the end of the recapitulation. Irenaeus calls this process of restoring humanity recapitulation. This repeats, and is followed by a recapitulation of the second section outlined above. The most contested point musicologists make is the location of the beginning of the recapitulation.