Thanks for posting that link, Bill. It was helpful and I'm saving it for our Montana file.
Took a look at the different layouts. If I'm reading the diagrams correctly, the splitters appear to be internal as exposed in visible sight. Funny thing, though, like I said, one is actually external behind the TV. Go figure.
Who knows if there are 2 splitters or 3 or 20. Haha! Every rig is assembled differently. Heck, we recently learned (when having a gray tank replaced) that there were 2 or possibly 3 different brands of tanks installed on the line in ours.