Yes, I think you are correct, the Pashtun ethnic legacy is supposed to be Alexander the Great (Greek) not Roman. Anyway, I know the Kalash are not Pashtuns or even Muslims. They may both come from the same pre-Islamic ethnic stock though. Here is a Wiki paragraph about the Kalash , who number about 6,000 in their three valleys of the Chitral: "The culture of Kalash people is unique and differs drastically from the various ethnic groups surrounding them. They are polytheists and nature plays a highly significant and spiritual role in their daily life. As part of their religious tradition, sacrifices are offered and festivals held to give thanks for the abundant resources of their three valleys. Kalash mythology and folklore has been compared to that of ancient Greece, but they are much closer to Indo-Iranian (Vedic and pre-Zoroastrian) traditions."