Yeah. The Shadows can't really come out to our world and they mostly live in the TV world except for Teddie. [And up until Arena happens, but whatever.] But it was always easy to tell when things were going wrong in the TV world based on how foggy it was in our world. They were sort of in sync that way. Anyone could see the Midnight Channel, but I don't know how they determined who could and couldn't enter the TV. I didn't know about it until I was kidnapped.