The C.I.A. in the Works of John Flanagan

When the Mapletown band's C.I.A. is thrown into a world they've never been in, they are separated. Isack and Cora end up on a strange ship that Cora has only read of in stories, The Heron. Austin, on the other hand, is found by the Araluen Ranger Gilan and accepted as an apprentice. These friends always worked together the best, and will they meet up at all during their adventures in this world?