For one: how long is Eleven trapped inside the Upside Down before stumbling onto this portal?
We know that Season 2 takes place a year or so after the events of Season 1, but Eleven’s escape in the video above could take place the day after she originally disappeared, or not until the the second season finale.
Granted, it likely isn’t the latter, since we get to see her rocking curls and kicking ass in the latest trailer, but the point is that it’s not easy to nail down a timeline for anything just yet.
It’s also not easy to tell how she and the boys will be able to take on that giant shadow monster successfully without getting destroyed ten times over, but we’re assuming creators Matt and Ross Duffer have all the logic fully sorted out.