Sorry as per Long war Journal, country side of Kunar Province was again used as training Camps for Al-Qaeda back in 2015 I think, US Destroyed an Al-qaeda camp in Kunar Province. US Officials allowed the camp to grow in size monitoring it, When it had more than hundreds of recruits they bombed the camp and conducted cruise missile strikes totally annihilating it, Most of the members who survived the bombing and missile onslaught were later killed by US Special Forces.
Al-Qaeda has regrouped well in Afghanistan. Till now Taliban has not committed to hand over Zawarhiri or Saif al Adel to US.
US might have killed Osama and detained Khalid Sheikh Mohammed, some of the Jihadist who were part of Al-qaeda core group are still holed in Afghanistan. Zawahiri very well understood that the psychology of western nations, he understood western people have limited patience for prolonged war.