A potentially contentious meeting of the joint parliamentary committee on telecom slated for June 12 — supposed to consider BJP leader Yashwant Sinha's demand that former and serving PMO top guns as well as former telecom ministers A Raja and Dayanidhi Maran be examined — has been put off. The discussion was likely to have seen sparks fly as JPC chairman P C Chacko is keen to prune the list of examinees to a few witnesses like CBI director A P Singh, finance secretary R S Gujral, attorney general Goolam Vahanavati and former telecom secretary Sidhartha Behura.