River Sarasvati and ancient civilization chronology

The URL is an article by Dr. Nanditha Krishna (Dec. 21, 2003) arguing that Indus, Sarasvati and Vedic civilizations are the same, starting with the ground-truth of River Sarasvati and a reference to 7 books on Sarasvati by Dr. S. Kalyanaraman. In my view, Vedic culture pre-dated the Indus Valley civilization and started with the maritime-riverine settlements not far from Bhr.gukaks.a (Bharuch) at the mouth of River Narmada and not far from Bhimbhetka. This hypothesis can be researched further in the context of the evolution and spread of Austro-Asiatic languages including Munda, Mundarica, Santali and Vedic.