The most bizarre moment (and one of the weirdest things I've seen on a football pitch) was when AMN had the ball wide right just past the half way and with Pepe maybe 10-15 yards ahead of him on the sideline. AMN gets the ball. Pepe then RUNS BACK towards his own goal, beyond AMN and then makes himself available for the BACKWARDS pass from AMN. I couldn't believe my eyes. They were actually putting in extra effort to be as negative as possible.
Oh, and then Pepe immediately gave the ball away and stranded AMN, IIRC. Or maybe that was one of the other countless times he misplaced the simplest of passes. Not just him. But all of them. Arsenal, pass masters to past it.
I have a feeling this might be round 2 of Arteta's requirements. You get the basics down (shape, press, hustle for the 90), next we're going to try to do something with the ball. And I think that's where it may be a bit too much for some of these players. Work AND think.