Plot hole: According to the denouement sequence shown in the film, Linnet Ridgeway is shot asleep in her bed approximately three minutes after retreating from the lounge. Less than 2.5 minutes pass from the moment Linnet leaves the lounge to the moment when Doyle is left alone by the other guests. It takes another 30 to 45 seconds for him to pick up the pistol, rush into his cabin and kill his sleeping wife. How could Linnet have walked to her cabin, taken off her jewelry, changed into her night-dress, retired to bed, and fallen asleep in 180 seconds? (00:59:00)
Suggested correction: The sequence never showed when Linnet goes to sleep. We can't be sure how long it is between her leaving and Simon shooting. All we know is in the actual scene she leaves after having already taken a sleeping pill. This is "movie time", not real time. 3 mins can be 30 mins in movie time. The flashback sequence doesn't clarify anything based on her timeline.
This...is not at all what happens. This is the 1978 movie; Linnet is playing cards with the others up until a moment before cutting the game short not by her choice but because of Jackie's interference, so certainly took no pill in advance nor does she take one on screen, and the characters interact with no interruption from that point on leaving no room for an implied 'movie time' elapsing at a significantly slower rate than 'real' time.
Plot hole: Perhaps the biggest plot hole in the movie is centered about the reappearance of the Owsla officer Holly. Even if the warren was destroyed right after Hazel's band had departed, Holly would not have caught up with them right before the new warren at Watership Down - even with the delay at Cowslip's warren - with the additional detour in Efrafa, considering that acquiring the amount of information he got from its organization would take more than just one or two days. In addition, Richard Adam's novel, on which this movie is based, features the location of Efrafa some distance away from the down, nowhere between it and the Sandlefort warren (Hazel's and Fiver's home). In fact, Holly went to Efrafa (along with a missionary group of Hazel's band) some time after they had settled down in the new warren.
Plot hole: At the beginning when the SWAT team breaks through the door in the basement and all the zombies escape they don't attack the SWAT team they just run up the stairs.
