You posted a major spoiler for the episode in the thread title. Anyone watching the show is going to figure out that the phrase "Hold the door" is going to be important in the episode. Which makes it quite a big spoiler when you haven't heard it yet 50 minutes in.
Right - and about 4 seconds after you first hear it, you realize the significance. I didn't post what that significance was. Heck, I didn't even post what
show I was referring to .
But whatever - you weren't wrong to change the title. Thanks for watching out for that sort of thing - I didn't see any way what I posted could be an effective spoiler, but I didn't consider the replies to said initial post.
ANYway, back on topic. Despite what happened there being, strictly speaking, time travel, it didn't feel that way at all. Bran and the Raven had observed the past before, so that aspect wasn't new. I guess the new bit was their (his)
influencing the past. But even that, with the connection to warging, didn't seem time-travel-y.