Not quite a year ago, Steven found some rather puzzling geometry on the Bentenmaru’s bridge. As I continued to rewatch on a big screen tonight, I spotted something: the bridge isn’t just two levels, it’s two parts, and the upper part has a very good reason to be mobile.
In episode 7, around 10:30, the Bentenmaru is cruising at FTL on its way to a Perfectly Ordinary Mission (coughcough); the level that the captain’s chair is on is much higher than the other, and you can see lovely streams of hyperspace through the giant wrap-around windows. Just after the eyecatch, around 11:40, they come out of warp and go to battle stations, and the top half of the bridge sinks into the body of the ship, covering the windows and bringing the two levels much closer together.
So, the normal exterior corridors either reconfigure themselves with the upper bridge, or else are blocked off to lock down access. And, of course, battle stations is precisely when you’d want it to be easier for someone on the lower bridge to directly reach the upper.
It’s still possible they failed to animate it 100% consistently, but they definitely thought about it.