Now that I think about it, while they were originally looking at Finne since she was the MC, Endo and Kobayashi moved their perspective to look at Liselotte, right?
So the only way for them to comment on this scene if for Liselotte to be there, right?
Which means that, while this is ongoing, Rize is outside of the door, looking at them.
@Gianoria and @wymar. In chapter 3 it is show that Kobayashi picked Liselotte's perspective and Endo picked Bard's perspective. Either you guys are correct with one your theories or its a mix of both your theories