When Deacon, Gray and Mark sit down in the kitchen to eat their fish and chips, we clearly see all three men open their paper packets and start to eat. However, after Deacon gets up to look out of the window after they hear noise outside, the shots taken from the head-mounted cameras show the food packets unopened and the shots taken from the camera mounted on the kitchen ceiling show the packets open. The packets open and close as the shots change through the scene.
The Vatican priest picks up a cross and refers to it as a crucifix. A crucifix is a cross with the figure if Christ on it.