The end goal is still Nirvana, which is ultimately beyond all concepts and language, even beyond the Buddhist teachings.+

Buddhism has not proved the truth of Nonduality because Buddhists do not believe in the existence of the Atman. Without Athma, nonduality is impossible. Buddhists believe in emptiness, but they fail to recognize that emptiness is the nature of the Atman. Emptiness is Athma itself

Dalai Lama said: ~ ‘Buddhism need not be the best religion, though it is most scientific and religion and inquisitive. But Buddhism has no answer to certain questions like the existence of Atama [Soul] and rebirth. Dalai Lama said that as an individual, he believes in rebirth, as he had come across a few cases of rebirth. Modern science, Dalai Lama hoped, would unearth the mystery behind the rebirth. (In DH –dec-212009-Gulbarga).

Bhagavan Buddha pointed out the unreality of the world but he told people they were foolish to cling to it. But he stopped there. He came nearest to Advaita in speech but not to Advaita fully.

Sage Sankara disagrees with Buddhists who say there is nothing - a nonentity. Sage  Sankara believes there is some reality, even though things are not what they appear to be. If one knows the truth, they will know what to do to find inspiration for action. The seeker of truth‘s subject is to know what is it that is Real.

Buddhism says: all things are illusory and nothing exists. However, Advaita avers that it is not so. It says that the universe, of course, is illusory, but there is Brahman (consciousness), that exists, forming the very substratum of all things (illusion or universe).

Only when we independently search the truth without religion and its doctrine then we will be able to realize the truth beyond form, time, and space.

There is no need to study neither Advaita nor Vedas nor Buddhism to realize the ultimate truth or Brahman. It is no use going roundabout way; trace the Brahman.

Sage Sankara said: ~ Neither by the practice of yoga nor philosophy, nor by good works nor by learning, does liberation come, but only through the realization that Atman and Brahman are one in no other way.(1) Vivekachoodamani v 56, pg 25

Advaita is the next step higher than Buddhism because it gives the missing reason, viz. unity, non-difference from others, and because it explains that it used the concept of removing the sufferings of others, of lifting them up to happiness, only as we use one thorn to pick out another, afterward throw both away. Similarly, Advaita discards both concepts of misery and happiness in the ultimate standpoint of non-duality, which is indescribable.

Buddhists say that a thing exists only for a moment, and if that thing has still got some of the substance from which it was produced, how then can they deny that its cause is continuing in the effect; hence, its existence is more than a moment. Vedanta is concerned with whether it is one and the same thing which has come into being, or has it come out of nothing?

Even in Buddhism:~ Buddhist teaching has itself become a kind of interactive and Self-evolving process, much like its idea of pratityasamutpada. However, the end goal is still Nirvana, which is ultimately beyond all concepts and language, even beyond the Buddhist teachings. In the end, even the attachment to the Dharma, the Buddhist teaching, must be dropped like all other attachments. The tradition compares the teaching to a raft upon which one crosses a swift river to get to the other side; once one is on the far shore, there is no longer any need to carry the raft. The far shore is Nirvana, and it is also said that when one arrives, one can see quite clearly that there was never any river at all.: ~ Santthosh Kumaar