Rajdeep Sardesai and Sagarika Ghose have sent out separate letters to staff at CNN IBN and IBN 7 announcing their departures. Hers is a sunnier mail, saying she is quitting to try something more challenging. Sardesai says "editorial independence and integrity have been articles of faith in 26 years in journalism and maybe I am too old now to change!" So the reason is implied rather than stated.