During the Super Bowl, we saw promos for "Leatherheads" and "Wanted" from Universal, Sony's "You Don't Mess With The Zohan", and "The Chronicles Of Narnia: Prince Caspian" from Disney.
This doesn't make them part of the TV Universe.
At best, it was some kind of dimensional vortex, a window into the Movie Universe.
"The Chronicles Of Narnia" by CS Lewis are part of the TV Universe, however. "The Lion, The Witch And The Wardrobe" was produced in 1988, with "The Voyage Of The Dawn Treader" broadcast the following year, and "The Silver Chair" in 1990.
And the Tooniverse had its own version of the first book back in 1979.