A not insignificant percentage of fans really wanted Jaqen H’ghar (and The Waif) to somehow be behind it all.
So, I love that Game Of Thrones producers really leaned into that conspiracy theory.
The House Of Black And White callback is a little more complicated.
In fact, there were many fans who were convinced going into Season 8 that every single major show development was somehow a machination of the Faceless Men.