Nothing, and it’s the only possible answer. For as long as it still means something, it is not yet complete. There’s a duality in every meaning.

Some people think it means being connected to Spirit. There’s a great duality in them between ego and Spirit. A connection is far from oneness.

Some people think it means realizing that you’re God. God cannot realize that it’s God, that’s laughable - only a person can. There’s a duality between God and the entity which realizes that it’s God.

Some people think it’s the feeling of oneness. For as long as you still feel oneness, it means you are capable of not feeling oneness, so you are not yet whole. There’s still duality there.

Some people think it’s the state of non-duality. If you’re in a state of non-duality, there’s a duality between duality and non-duality in your mind. They are one and the same.

So it means nothing, for all its meanings are self-created and will ultimately be self-destroyed. They are like peels of an onion as you approach the very core. If there’s still some meaning in it for you, there’s a deeper layer which will annihilate it.

Life has no meaning outside of it. The only meaning of Life is Life itself.

Enlightenment cannot be part of life, it cannot change, inform, direct or in any way influence life. It cannot do any of these things, because enlightenment is life.