Sri Advaita is a plenary portion of Narayana
Sri Caitanya-caritamrta
CC Adi-lila
CC Adi 5.146, Translation: Śrī Advaita Ācārya and Śrīla Nityānanda Prabhu, who are plenary parts of the Lord, are His principal associates. With these two the Lord performs His pastimes in various ways.
CC Adi 6.10, Translation: Śrī Advaita Ācārya is a plenary part of that puruṣa and so is not different from Him. Indeed, Śrī Advaita Ācārya is not separate but is another form of that puruṣa.
CC Adi 6.22, Translation: Śrī Advaita is the principal limb [aṅga] of Nārāyaṇa. Śrīmad-Bhāgavatam speaks of “limb” [aṅga] as “a plenary portion” [aṁśa] of the Lord.