The story between Seraph and Agent Smith
There's a short conversation between Seraph and Agent Smith where Smith says "I remember chasing you was like chasing a ghost" and Seraph says "I have beaten you before".
What's the story between Seraph and Agent Smith? what point in the timeline did they end up meeting and how did they end up becoming enemies?
I know Seraph is a program like Smith but it's never really explained (to my knowledge) how these two characters already know each other.