The seventh episode of Ahsoka, "Dreams and Madness," saw Baylan Skoll and Shin Hati facing off against Ahsoka Tano, Sabine Wren and Ezra Bridger on Peridea. This time, though, Baylan and Shin were each fighting on their own and for their own reasons. After being introduced in Ahsoka's first episode, their paths have finally diverged, and Shin's apprenticeship has come to an end. The sudden nature of their parting came as a surprise, but over the course of Ahsoka Season 1, it has become clear that Baylan and Shin are driven by two very different goals.
Source:https://www.cbr.com/ahsoka-shin-hati-apprenticeship-conclusion/