Board Thread:General Discussion/@comment-25703308-20150428082231/@comment-5899967-20150428135823

Season 4's halves are connected in several ways already:

- The Apprentice and the hat are introduced in 4A - Operation Mongoose begins in 4A - ZMarian plot is in both halves too - The QoDs are introduced at the end of the Frozen arc - Lily is first introduced in the middle of Frozen - Ingrid's scroll is used to enter in Storybrooke in the second half - Rumple is a villain (more than in the other seasons)