Board Thread:Questions and Answers/@comment-4495539-20140531082603/@comment-1409915-20141031024230

Mattwo wrote: Eh, whoever mentioned it, doesn't matter. OV story arcs have been working with the little plot threads stringing along, with a few episodes actually focused on the arc.

Actually aside from that first mention and Fight at the Museum there was also Chrono Spanner's first couple of appearances, and the "And then there were none/was ben" 2-parter, "It's a Mad Ben World" and probably a few other plot threads that will likely be woven all together during the Time War itself. Well when I said Time War I was being generous since, that's what the arc is called. I wasn't talking about storyline connections and where they begin, but if you want to get supremely technical about it the Time War actually began in Season 2 with the episode Ben Again

That's when Ben 10'000 first mentioned Maltruant the rogue Chronosapien, and the Time War and Paradox's talk about Time War affairs, and him concealing the Chrono Navigator. That's also closer around the time it was revealed there would be an arc dealing with the Time War.