Board Thread:Questions and Answers/@comment-28541550-20160524151010/@comment-1031724-20160525000317

And both of them had nothing really "changed", the time travel was merely the cause of events that had already happened. (like Harry cast the Patronus, and Bran was the one who made Wyllis Hodor)

What confuses me is when they're inconsistent with this. Like in Timeline (spoiler alert) they found Marek's body in the sarcophogus before he went back in time, yet Marek changed history by saving Lady Claire