New Delhi, Aug. 5 -- Three NCPI MPs on Tuesday stayed away from the weekly NDA parliamentary party meeting but attended a lunch hosted by West Bengal chief minister Suvendu Adhikari at Banga Bhawan in New Delhi, amid signs of differences within the 20-member TMC rebel group. The three MPs - Khalilur Rahaman, Abu Taher Khan and Yusuf Pathan- also stayed away from the NDA's 'Mangal Milan' meeting on July 28. Rahaman said, "We are not with the NDA, and neither are we going to the BJP, rest assured." NCPI floor leader Sudip Bandyopadhyay also attended the Tuesday meeting. He could not attend the July 28 meeting. "I am one of the senior-most parliamentarians in the country. All are united in NCPI. It is a good experience," he said However, the B...