S20E16 They Might Not Be Giants! (Patreon)

Another filler episode, but SBJ and Irene go over some characters they look forward to and how episodes like this can be a turn off from the anime. 

After practicing with Lana, Popplio has learned how to make a balloon that’s big and sturdy enough to carry a Pokémon. In a series of mishaps, Rowlet and Popplio end up together inside the balloon—which gets swept away!