Even though you configured the Channel screen saver with multiple channels and a time delay to switch channels, the screen saver does NOT switch away from some channels?
Once the document has completely loaded the timer starts. If the document loads another page, the Onload event is triggered, and the timer is reset. If a page is loaded before the timer elapses, the screen saver will NOT switch to the next channel.
NOTE: The timer is reset when a document is loaded to allow for redirects and slow pages.
To work around this feature, DO NOT us a Web page channel that continuously loads other pages.