Board Thread:Episode Discussions/@comment-1251315-20150205113606/@comment-25632268-20150205162022

During Obito's flashback we see a Chuunin Exam that seems like Konoha exclusive, so it is a given that villages can do it on their own, without inviting foreigners. And Temari was Jonin at the day of Naruto return, but it was never explained when she passed her exam, so I think timeline in this case is ok.