To conclude, the culture and proper names of the Mitanni Indo-Aryans were dominated by the horse and the chariot. Indeed, the Mitanni Indo-Aryans see… - Asko Parpola

The etymologies of the names used by the Rgvedic Aryans of their enemies thus speak for their above suggested identification with the carriers of the Bronze Age culture of Greater Iran, and for the proposal that these were speakers of an Aryan language.

The fire-altars of Kalibangan and Lothal are so far without parallels at Mohenjo-daro and Harappa. Indeed, it has been asked [by Raymond and Bridget Allchin]: "Fire- worship being considered a distinctly Indo-Aryan trait, do these {ritual hearths of Kalibangan] carry with them an indication of an Indo-Aryan presence even from so early a date?" This hypothesis new seems quite plausible to me, if "Indo-Aryan" here is understood to refer to carriers of the Bronze Age culture of Greater Iran, who had become quickly absorbed into the Indus Civilization, culturally and linguistically. It is supported further by the cylinder shape of the famous Kalibangan seal showing a Durga-like goddess of war, who is associated with the tiger. The goddess on the Kalibangan cylinder seal is said to be similar in style, especially the headdress, to one depicted on a cylinder seal from Shahdad [in Kerman on the desert of Lut in Iran, a major centre of the Bronze Age cultural tradition]. Seated lions attend to a goddess of fertility on a metal flag found at Shahdad.

At this time Assyria was trading with Cappadocia and importing tin from the east. The source of this tin may have been in central and northern Afghanistan (Kandahar and Badakshan), whence the Harappans and the Bactrians appear also to have obtained their supplies… On the other hand, from the 18th century B.C. onwards, north Syrian seals show such a typically Central Asian motif as the two-humped Bactrian camel, which is depicted in the BMAC seals several times…These cultural contacts between the Syro-Hittite world and the BMAC do not prove that the hypothetical Aryan authors of the BMAC came from the west, as suggested by Sarianidi (1993b, 1994), but rather foreshadow the takeover of power in Syria by the Mitanni Aryans and support their Central Asian origin.”