As the show wore on, and I watched more YouTube videos on theories and such, I noticed that the show doesnt have abundance of squirrels, etc., in the background of scenes. But in some quite important scenes, since the beginning, there tend to be ravens around.... I believe Bran, and the raven before him, were always keeping an eye on what was going on.
Also, with their ability to view the past, present (in different/distant locations), the future, and potential to manipulate it (see Bran yell at his father and Ned turn around right before Ned enters the keep to see Lyanna give birth to Jon Snow), I believe the three eyed ravens were playing checkers in the Game of Thrones whilst everyone else was playing chess.
Pretty sure Bran clued Tyrion into the details a couple episodes back.
I wouldn't have a clue to any of this, specifically the ravens in certain situations, in windows in the background for example, during key conversations throughout the show, without watching YouTubers do some serious, time-consuming videos.
We're all Red on the inside. Some of us are just Blue in the face, and they're sick.