I'm pretty sure a smelter means that they would be connecting it to rail, and to extend that into the  Schaft Galore Mining District would be cheap and a no-brainier with massive Opex savings.

I too believe the projects are linked and are being quietly drafted to share infrastructure.  The latest PEA recommended the investigation of a number of possible synergies and savings with (for)  Galore Creek.  

Galore won't be built without Schaft Creek involved or built first, imo, so that makes Schaft Creek the key. Explains alot if you ask me.  Especially the constant pushing back of the Galore Creek PFS which would likely recommend the value of the same combination.