Earlier quoted context omitted.
The idea of Hinduism is nonexistent. What unifies all "religious" and scientific/mathematical theories in India, is the fundamental idea of Dharma. Sikhism, Jainism, Buddhism, and the various schools that are characterized as "Hinduism", all in one way or another layout vast theories about "Dharma" is, and give their own varying definitions of it. Calling this a "Dharma Protocol" is more apt than people think, and I'…
The fundamental ideas of Sikhism , Jainism and Buddism are not equivalent and Dharma in in each of these religions means aderence to their idea of the righteous way.These ideas are distinct and practitioner of these religions would dissmiss your theory of unified dharma. There are several Sikh scholars that I know of who could help you with your understanding of Sikhism and how it is different from Hinduism. However,…
That is to say there is no universal, central, or dogmatic theory of "dharma", nor perhaps a central agreed upon theory of Dharma, just a vague conception of what it is for each individual interpreter. Whether that interpreter be Buddha, Nanak, Shankaracarya, or the various other Indic philosophers is irrelevant. What unifies them simply is the technical language used to describe their philosophy, and define their own ideas.
So no. I'm not saying all religions in India are the same. All I'm saying is that the various philosophers within that geography used a similar set of vocabulary, and a similar set of ideas to construct their own thought structures in competition, opposition, or in general progression with each other.
So in that sense, there is at least something that makes them closer to each other than they are separate.