With more than 30 movies in a little over 15 years — not to mention the additional shorts, TV shows, and complicated cross-movie continuity entailed in keeping everything together — it’s not too surprising that, occasionally, the Marvel Cinematic Universe drops the ball when it comes to providing closure to important plot elements.

Sometimes, that’s exactly the thing that can set up a big reveal much further down the line, as is teased for next year’s Captain America: Brave New World, which will pick up on plots from, checks notes, 2008’s The Incredible Hulk. (You know, like most movie franchises that wait 17 years to pick up storylines again.) Other times, unresolved plots are a sign that everyone quietly agrees that, just maybe, a project was so disliked or unsuccessful that everyone involved has made a silent pact never to speak of it again… and then there’s the