Board Thread:Spoilers!/@comment-6175354-20141215234519/@comment-25926288-20150305144841

It could be really simple. Cora could have killed Lancelot before the curse and after the curse broke time restarted in all the lands. Cora was both Lancelot and then herself when Snow and Emma arrived. Phillip and Mulan were on that hill riding towards the castle before being frozen. Philip and Mulan fought together those 3-4 years prior to the Dark Curse and headed back for Aurora, outrunning the Curse barely.