Well, since as far as I know, we don’t have any known hittite dna we don’t know

Well, since as far as I know, we don’t have any known hittite dna we don’t know that. The AFAIK Armenians are iranic peoples (southern to eastern), not europeans (Northern-to-western).

Everything I know of says that the hittites survivors moved south into the levant and eventually outbred and are lost. It’s more correct to say that the lebanese, georgians, armenians, kurds, iranians, are the closest we can claim to indigenous people of the region and the hitties were a conquering minority of european invaders whose arrival created a dispersal (mass migration) out of anatolia.

The marsh arabs (semites) probably arrived from the southern route via the arabian peninsula, red sea, and persian gulf rather than eastern route from the indus river back across the iranian plain and into the cuacuses.

The indo european langauge evolves (as I undersetand it) from these proto-iranic people and the steppe people cooperating-competing with larger herds made possible by the invention of animal-drawn carts (wagons->chariots) – yurts on wheels – that allowed them to take supplies with them onto the steppe. They developed lactose tolerance into adulthood by substituting fresh water consmption for milk consumption, and gaining the 40% more calories from that than traditional food sources by doing so.

Whatever the relationship, the grops shared a language and culture but still separated and behavied differently as they expanded iranic-east into india (repeating the iranic agrarian invasion in india of 4000 bc, and european-west (repeating the agrarian invasion of europe in 7000 bc.)

The metal-economy in the ancient world was much like the oil economy in the modern world. Food was the subsistence economy. Metal made states and armies possible. States and armies made professionals possible. Professionals made invention possible, and so on.