The latest promo of 'Kaun Banega Crorepati 17' offered a delightful twist as Farhan Akhtar took over the host’s chair, quizzing Amitabh Bachchan and his father, Javed Akhtar. From light-hearted banter to Big B reminiscing about his experience working with Farhan in Lakshya, the episode promises nostalgia and laughter.