Board Thread:Episode Discussions/@comment-25319479-20150115114150/@comment-26302001-20150115225140

No, part 2 starts after this filler. This filler is still between part 1 and part 2. Besides, DB2, DB Mini, DB3 and DB4 give us Ages.. and all of them but 1 give us Promotion Ages and that alone solves your timeline issue with this arc.