I put that one down to AD, Daino and Stefano.
AD had no interest even though he had turned in, and the rest of the backline followed. He made absolutely no attempt to do anything about what was unfolding in front of him and just jogged on. His reaction was deplorable.
Daino was at the back of the scrum and his role there was to run an arc and follow the play to defend against exactly what unfolded. He was coming across, but with no urgency at all, and was caught well short of where he should have been. This is important because the fullback often controls defensive line breakdowns and he totally miss read this one
Stefano broke early and took a few paces then gave up on the play instead of plugging that inside gap. AJ ran straight past one armed attempt at tackling him.
Everyone talks about the 1%s that matter - there's two 99% efforts and an I don't give firetruck from AD.
It is all about attitude. Laurie and Stefano were close to the right positions but were really going through the motions - tired? Maybe but that is the difference in attitude between good teams and us. AD - he may as well have been a lamp post for his effectiveness in defence on that play.