Makes sense if a joint interview indicates which of the interviewees responded to which question. Or else it confuses the reader for two persons cannot say everything in unison, word to word. But The Times of India doesn't think it mattered. The Q&A on its edit page with CS Krishna and Karthik Laxman on satire does not specify this. If it were a joint reply to emailed questions, it could be assumed one spoke for the two, or both drafted the responses, but that is not mentioned either.