Reddit user discerninglytasteful began: “I believe they’re the only two humans who are fully aware of what Lucifer, Amenadiel, and Maze don’t count. Neither does Eve.
“Which means they are now standing on the other side of the curtain. Which means they are on a different plane of knowledge than Ella, Dan, and every other human on the planet.”
Moreover the user cast their mind back to an earlier scene to illustrate the point.
They added: “Once Lucifer knows that Chloe knows, he comes back and toys around with Ella for their mutual amusement, knowing that Ella won’t believe the truth. Instead of laughing (as he probably expected she would do, since he would’ve laughed at Ella in her position), Chloe looks vaguely disturbed.”