This news proves otherwise, as while afghan talibs may have different goals right now from pakistani talibs, they are still part of the** same** larger organization.
And this why all the top Afghan, Pakistani talib and al qaeda commanders still meet with Baitullah. He is one of their own:
*“Mullah Omar is our Ameer but like Afghanistan, they are determined to continue resistance in Pakistan,” Baitullah Mehsud told the high-ranking delegation of Taliban who met him recently in Waziristan region. According to the highly-placed reliable sources, the 11-member Taliban delegation handed over the message of Mullah Omar to Baitullah Mehsud.
After departure of the 11-member Taliban delegation, the leading Al-Qaeda and Afghan commanders also held a detailed meeting with Baitullah Mehsud. The detailed talks concluded late Thursday night, wherein Baitullah Mehsud rejected outright the requests for halting activities in Pakistan. According to the sources,** the leading Al-Qaeda and Taliban commanders who met Baitullah Mehsud besides others included Abu Yahya Al Laibi, Abdul Haq Turikistani chief of Hizbe Islami Turkistan (a party of Chinese and Central Asian militants), Siraj Ud Din Haqqani, Abdul Hakeem Sharaee and Mir Ahmad Jan Hashemi.***