Connie is suggesting this is possibly an Eren doppelganger, huh? I get what he's saying in a sense because the dude in this episode didn't look like Eren, and the big mystery of this season is what made him change so much. A fake Eren seems too absurd to be true, so either he saw something that made him change or Zeke somehow convinced him to change.
Also yikes, what have they done to Historia? I don't like this.
