Before MCC was released, H2A was supposed to have 2 additional cutscenes that will link the events for Halo 5. In the final game, you only get to see the prologue cutscene when playing The Heretic mission but not the epilogue in the last level. To explain this, when after watching the cutscene with the Gravemind and Cortana, the whole screen goes black but doesn’t play the epilogue cutscene. The only way to watch it is to go the the Halo Channel and watch the cutscene there. I wish that 343 could fix it.