I'm only about halfway through Part 1 of the Year of Hell 2-parter, but, so far, the episode has been the perfect example of the things I've been saying re: Voyager's continuity and serialization. Thus far, we've seen every single specific detail that we learned about the YoH from Before and After (the loss of Sickbay, the Mess Hall becoming a triage center, the chronoton torpedo lodged in the Jeffries Tube on Deck 11, the nature of B'Elanna's injuries) realized in some fashion, even if things play out differently than they did in that earlier episode; if the show didn't have continuity or serialization, this kind of symmetry wouldn't be present to the degree that it is.