So basically, Brock and Darcy meet while Brock's undercover for Fury (MCU Brock was a triple agent, this is my headcanon) and after Insight, they start a relationship.
"I Won't Believe in Songs (Unless They're Sung By You)" is still my favorite of your Sansa x Arthur stories and this edit is just perfect for it. You chose the scenes so well, it's just as flowing and powerful as your fanfic. Thank you for making and sharing it, you've made my day. :) I hope there will be a new chapter soon.