I know I'm weeks late on this lesson, but I've been the busiest man in the world lately.
Santanic duality is a more Biblical correlation between Santa Claus and Satan.
Satan's duality can be found in 1st Peter 5:8 - Roaming about as a roaring lion and 2nd Corinthians 11:14 - transforming into an angel of light. Santa's duality can be found in the naughty and nice lists. We all know that Santa rewards "the nice children" with gifts on Christmas day, but a little known fact is that Krampus punishes "the naughty children."
Now here's where the correlation begins...According to Satan's duality, one is a stalker, nomadic, seeking to devour and destroy just as a lion does to its prey; while the other is an angel of light, which means messenger (angel) of truth ...