Logically speaking, you might be able to find a maze within a labyrinth, but you will probably never find a labyrinth within a maze! The only exception I can think of is Skyrim's Labyrinthian, which not only has Shalidor's Maze (Quite shitty as mini mazes go but alas) within it, but Labyrinthian itself is made up of 2 dungeons. It has 2 main entrances and exits, along with numerous side structures. You literally need to clear it twice. Any contenders against this statement? I would love to be proven wrong truly!