If anyone is interested in what Nestorius actually advocated you can read a translation of his work from the link below. It's available in text, PDF, and Kindle versions.
The Bazaar Of Heracleides : Center for the Preservation of Ancient Religious Texts, BYU : Free Download, Borrow, and Streaming : Internet Archive
G. R. Driver & L. Hodgson, The Bazaar of Heracleides, newly translated from the Syriac and edited with an introduction, notes & appendices. Oxford, Clarendon...