Were Chanakya and Kautilya different? There is a significant debate on this issue

Having been introduced to Arthashastra by the Rangarajan translation, I was under the  impression that Chankya and Kautilya are the same person. As Rangarajan states in his book: All sources of Indian tradition— Brahmanical, Buddhist and Jain—agree that Kautilya (also referred to as Vishnugupta in a stanza traditionally included at the end of the work) […]