Over 420 chapters ago in chapter 292 Noland said he saw some Dwarves. Now in Chapter 713 it was confirmed that Noland came to Dressrosa and Green Bit. I love Oda's uses of forshadowing. Hopefully we will see another flashback of Noland since Skypiea. It would be awsome to see Noland and the dwarves fighting together. And to see his true strength.