The output of an Audio Mixer can be routed into any other group in any other Audio Mixer in a sceneA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
See in Glossary enabling you to chain up a number of Audio Mixers in a scene to produce complex routing, effect processing and snapshot applying.