A.Yes, they can. The REAC interface used in the Digital Snake system allows you to easily distribute audio connected to the S-4000S unit simply by adding a switching hub and an additional S-4000H unit for each audio destination.
This type of connection is called a "split" connection. It allows you to distribute audio signals not only from the stage to the mixing console, but also to a variety of destinations, such as:

(2006/04/04)