All three speakers (Nagarjuni, Pushpa, and the host) are Indians and thus speak Indian English. This is very noticeable in their pronunciation, which differs strongly from the standard pronunciation of English. For example, they do not pronounce the 'th'-sound. In words like "the", "think", etc., the 'th'-sound becomes a simple t-sound. What is also striking about the three speakers' pronunciation is their alveolar pronunciation of the 'r'. Examples are "area", "there", etc.
