a bug-two skills are connected
Pos.Pron. and Nom.Pron. are shown as two separate skills. They are placed right under the second checkpoint.
But whichever I do, both advance. They have the same amount of lessons in the levels. The sentences are different.
It looks like a bug to me.
Perhaps it is something from the old system, where one could advance more than one skill while practicing one (the most advanced of the two or three).
It seems to be a bug. Duolingo's staff should fix this.
Please, submit a bug report via