Some attractions choose to be very specific about their place in the timeline and how their narratives intersect with those of the feature films (Shrek 4D, Despicable Me: Minion Mayhem, Escape from Gringotts). Others are just sort of doing their own thing and ask you to get on-board (Revenge of the Mummy, Forbidden Journey, arguably E.T. Adventure). This sounds like it's the latter.