Complex sentence: He added that the History Channel had placed an order for additional episodes, however... on March 31,2017 during an episode of Ferguson's new Sirius XM radio show, he told guest Larry King that the show had been cancelled.
Split into simpler sentences: He added that the History Channel had placed an order for additional episodes. However, on March 31,2017, during an episode of Ferguson's new Sirius XM radio show on which King was a guest, he stated that the show had been cancelled.