Board Thread:Dark Souls II/@comment-25673538-20150106161340/@comment-16047389-20150109150241

I believe that the Old Chaos is indeed the Chaos Flame.


 * The overgrowth in the Old Chaos is exactly like the overgrowth in Lost Izalith.


 * The Charred Knights of Eleum Loyce became charred after entering the Old Chaos to fight against the "terrible things that dwelled there", similar to how the Black Knights had their armor blackened by fighting against the demons within Lost Izalith.


 * The Old Chaos seems to be able to corrupt living creatures and spawn demons, just as the Chaos Flame could.

I do not believe that the Lost Sinner ever tried lighting the Chaos Flame, as when Sweet Shalquoir mentions it, she specifically calls it the First Flame. And there is an enormous difference between the First Flame and the Chaos Flame.