The Interrupt allows you to switch between Kiosk and Digital Signage.
So when a person touches the screen, a new Kiosk / interactive timeline will pop in, when no user interaction timeout is reached, the Digital Signage timeline will resume.
Now, with the common channel, you can play the SAME content without it ever restating, regardless if it's in the Digital Signage timeline OR the Kiosk timeline; in other words a video for example can co-exist in both timelines and continue and play uninterrupted in both modes.
Regards,
Eddie.