Indeed, in the episode we did see the character marching around, giving orders, and even looking after Bran (who, might we add, didn't seem all that excited to see his sister again after all that has happened). When Bran Stark came through the gates of Winterfell and reunited with Sansa, it caught just about everyone off guard. In the books, it's confirmed that somehow Littlefinger ended up in possession of the blade, but the show hasn't explicitly done that - until now.
In terms of Game of Thrones history, we're used to things being a little bit frosty, cold and icy between our beloved characters and that's without even mentioning The Wall and the Night King's army!
The fierce warrior previously made an oath to Catelyn Stark (Michelle Fairley) that she would protect her daughters and it appears Brienne is keeping those promises.
This by far is the most talked about the reunion in the entire show! It's just how serialized stories work.
However, while her confession doesn't directly implicate Littlefinger, it brings the conspiracy to which he was integral to light.
Starting with last season and really ramping up this year, Game of Thrones has been efficiently re-uniting the once-scattered cast of the HBO series. Perhaps it was by mistake?
The teaser for the next episode of season 7 - The Spoils Of War - sees the Catspaw Dagger shown very briefly, being drawn in a darkened room. "I was as shocked as the audience, cheering along for the underdog to be victorious for once in 'Game of Thrones' - which never happens - and then all of a sudden this brutal, horrific, gruesome death happens!" Is she like Sam?
The new season will also see the entire Cyrus family going for a ride and Ariana Grande turning into a green reindeer! And it turns out, left to her own devices, she runs Winterfell pretty well.
This is especially clear given how Bran decided to prove to Sansa that his powers are real. We know. We've been with them all along.
Could Jon have presented a less convincing case for why Daenerys should divert her troops to the north?
It's also very interesting that the very next shot from that same trailer is Sansa pouring over some scrolls. Fragments. I need to learn to see better. "And what's recurrent in Brienne's life is forming relationships with people that start with an opposing force, then a begrudging mutual respect and, out of that, a deep respect and pure love".