Shiranui did similarly only instead of practicing Z-Move poses he sent out his Meowstic, Nekomata, and his Salazzle, Nayamashii.  He prepared his Salazzle for the use of a certain devastating move by having Nekomata use Yawn on Nayamashii, soon sending the Salazzle to sleep.  He gave Nayamashii a Chesto Berry to hold and afterwards recalled his Pokémon, ready to battle the Ballonlea Gym.