I was just reading about the Star Trek: Legacy video game that was co-written by DC Fontana. Apparently one of the things it deals with is the Vulcan/ Romulan split which is referred to as the Sundering.
I am curious where this term originated from. Does it come from the TV shows because I don't remember it. Does it come from DC Fontana's other works? Does it come from Diane Duane's Rihannsu stories or does it originate somewhere else? If it does come from Diane Duane's works, does this mean Duane's and Fontana's works coincide on Vulcan/ Romulan history?
Thanks and have fun,