A Lore Question

We all know that the Humanity items from DS1 are fragments of the Dark Soul. But the amount of liquid Humanity you had in DS1 also boosted the damage of things related to the Chaos Flame, such as Chaos Pyromancies, Chaos infused weapons, the Chaos Blade and Quelaag's Furysword. Since the Abyss and the Dark Soul didn't play as big of a role in DS1 as they did in DS2 and DS3, do you guys think this was just a gameplay mechanic that wasn't intended to be a part of the lore or do you guys think there is any lore connection between the Chaos Flame and the Dark Soul?