"Pokemon mega evolution and z-crystals together."

Would it be possible for a pokemon to mega evolve and use a z-move together canonically?Ex. Ampharos mega evolves using an ampharosite and then uses an electrium-z.Gameplay wise, obviously you cant. But I'm talking about if it was in the anime or manga, could they work together for an extremely overpowered attack? via /r/pokemon https://ift.tt/3i2nGjb