Having looked at the video - no. We've got 9 people back against 5 Bolton players. Gardner who's a good 4" taller than Moncur ends up stood next to him marking no one. Yiadom and Moore are stood on the far past with no one to mark.
And here's another. Ball comes down the line from a throw in and then over from a cross where Pinnock comes across form right back to cover for Fryers who's baldy caught out. But even then there's 2 players ball watching and Yiadom comes across from RB to cover leaving a guy on his own at the far post. It's painful to watch.