I have, though not on DMT (I find it a little too mind-shattering for that level of conscious thought).
Hallucinogens generally tend to make concrete thoughts more difficult, and abstract ideas easier. E.g. it is harder to see someone farming as a farmer, and easier to see them as a member or representative of a group united by farming. Sometimes there's even a sort of recursion; that person is a representative of farming, but also more generally a member of the city, and a member of humanity, and a member of animals, and a member of living things, and a member of the universe. The Farmer is prototypical of farmers, but also of life in general.
I think that's the root of the psychedelic idea that all things are interconnected at some higher plane. Every living thing is unified by being prototypical of life, despite knowing that many living things share little in common in the same way that that farmer may share little in common with other farmers beyond profession.
Hallucinogens generally tend to make concrete thoughts more difficult, and abstract ideas easier. E.g. it is harder to see someone farming as a farmer, and easier to see them as a member or representative of a group united by farming. Sometimes there's even a sort of recursion; that person is a representative of farming, but also more generally a member of the city, and a member of humanity, and a member of animals, and a member of living things, and a member of the universe. The Farmer is prototypical of farmers, but also of life in general.
I think that's the root of the psychedelic idea that all things are interconnected at some higher plane. Every living thing is unified by being prototypical of life, despite knowing that many living things share little in common in the same way that that farmer may share little in common with other farmers beyond profession.