Dear Sri Ravi, Friends,
Regarding this question about whether both, nonduality and qualified nonduality are valid,
i came with this discernment that what Sri Ramakrishna has conveyed is like a Palindrome. A palindrome is a word, phrase, number, or other sequence of units that may be read the same way in either direction. For example:
LIRILUltimatley, there is no difference, it is the same, only the way we see, alone changes, but that which is, alone is, without any change! Hence both are valid, from point of view. Both see the same!
Infact, on some scrutiny, Palindrome, has been a significant concept in our vedic contemplation over the centuries.
Jnana Sambandhar has composed Palindromic devotional poetry:
யாமாமாநீ யாமாமா யாழீகாமா காணாகா
காணாகாமா காழீயா மாமாயாநீ மாமாயாIt refers to Shiva as the incomparable God, the one who plays the Veena, the beautiful one adorned with snakes, the one who destroyed Kama, whose abode is Sirkazhi, who also appears as Vishnu, and beseeches him (Shiva) to rid the devotee of impurities.
This Sanskrit poem was written by "nandi-ghanta kavis" in kanda style, by Ramaswamy Dikshitar, father of Muthuswamy Dhikshitar:
सारस नयना घन जघ
नारचित रतार कलिक हर सार रसा
सार रसारह कलिकर
तारत चिरनाघ जनघ नायनसरसा |
Some popular english palindromes:
‘Madam, I am Adam’.
“First Ladies rule the State and state the rule: ladies first” .

I have used the example of a glass tumbler half filled with water, where one sees that it is half filled, and the other sees it as half empty.
So, there is really, no difference, between any of the Siddhantas, I strongly believe so. All are valid.
Salutations to Bhagavan