dvadase 'advaita-skandha sakhara varnana'
ekadase—in the Eleventh Chapter; nityananda-sakha—of the branches of Sri Nityananda Prabhu; vivarana—description; dvadase—in the Twelfth Chapter; advaita-skandha—the trunk known as Advaita Prabhu; sakhara—of the branch; varnana—description.
The Eleventh Chapter describes the branch called Sri Nityananda Prabhu. The Twelfth Chapter describes the branch called Sri Advaita Prabhu.
Link to this page: https://prabhupadabooks.com/cc/adi/17/324