Dear a-TB,
You can't find unanimity on most of the issues. People of equally great genius differ in their views. In most of the cases it is seeing the same thing in different ways . But you can't indiscriminately mix concepts.
Shankara talks about non dualism and ways to reach that state including bhakthi. Ramanuja does not agree with non dualism and advocates bhakthi as the main way for final emancipation.
Dualism implies you are separate from God. In bhakthi you maintain that distinction and totally surrender to God. I can't understand what non dual bhakthi means. That is the reason I made that comment that you were googling to find information.
If you can define non dual bhakthi I can better answer your question.
Dear Sravna,
Non dual bhakti is possible through the
concept of Ishvara Pranidhana..that is its a commitment to Ishvara.
Advaita is all about Ishvara( Saguna Brahman) and the Ultimate Nirguna.
You already know that Ishvara ( Saguna Brahman) is a projection of Nirguna Brahman under the effect of Maya.
Firstly we have to define Bhakti.
Its from the root word bhaj.
It has a host of meanings ranging from selfless devotion, worship,to serve, natural inclination,fondness, to divide,partake of, participate.
But a sense of separateness is implied in the root word itself hence its dualistic beyond doubt.
But it could still be applied from the Advaitic point of view.
An Advaitin is aware everything is but a projection of Brahman.
Adi Shankara did install deities for worship and composed countless shlokas on deities too.
In other words his bhakti was on deified forms too a.k.a Saguna Brahman.
By fixing one's mind in selfless devotion to Saguna Brahman as a natural inclination one fully surrenders the " unreal" self to the real Self( Nirguna Brahman) and becomes established as in TAT( That) and an Advaitin experiences Tat Tvam Asi(Thou Art That)
In cases of dualuslitic schools of thought, though there is Sayujyam, one still has some tiny bit of separation from the idea of Tat Tvam Asi just to enjoy a little distance so that the Bhakta experiences the bliss of worshipping his Lord.
Its like this..the Advaitin is the wave in the ocean and has become the ocean.
The Dvaitin knows its a wave from the Ocean but he prefers to be the wave so he can always be together with the ocean and love its mahima.