After we reached the target at 1740 and 1720 (1740 - 1680 area ) from my previus idea (attached here), I would say that a beautiful wave 4 made of an inside ABCDE ( 3 3 3 3 3 waves) strucure might be in competition (or already completed), in that mentioned area.
But looking at the formation of this last leg down I would say that this could looks also as a wave 3 (wave 3, YES!! :D ), so I'm starting to play around this new exciting big idea and i drawed the extensions and retracements aaaaand...
here is the idea: a formation of 3 3 5 waves in wich we are into the wave 3!!!!!
This wouldnt have any impact in the bull count of the gigantic wave 4 before the last up move, so would be completely possibile in a bull scenario. Enjoy!