Anyways nobody takes Nawaz seriously .. Illegitimate government ...
This is an issue with two of India's neighbours - both BD & Pak never have faith in those whom the elect .
@ subject : Talking to PA would amount to legitimizing their role in running that nation. This is something India is not interested to do. Also, it would undermine the existing & future Govts as well. It is contrary to the policy of any Govt - no one formally talks to agencies within another nation bypassing the Govt .