Aaah, okay.
Maybe this is just a case of someone getting the scripts mixed up? I'm really curious about finding out WHY the episodes are so apparently out of order. Because like, on the one hand, yes they're "discovering they can do this" for the first time, but it's clear Diwan and Lena are stronger, so time has clearly passed in some way. Maybe the explanation is that this isn't them deciding "oh hey we can actually do this" and more "we can do it with THIS one."
Either way, I'd love to ask a show writer but they're probably about as likely to accept an interview from me as Monty, and is French on top of it. So...yeah, mysteriousness lost in time.
...that said I could TOTALLY TRY ANYWAY.