Actually i don’t think there is a time differential. I think it is possible, but i don’t think that is what is happening. I also don’t really think they need to ever show Alice. They don’t usually show the part of the story we know with the exception of Snow’s story. Like with Cinderella they showed the before, after, and some in between, but they never showed Thomas and Cinderella meet and fall in love because that is the story we know. So i think the same will be true with the story of Alice in Wonderland. They showed some before, how the hatter became mad, but there doesn’t seem to be a reason to show the events of Alice’s story.