Deliberate mistake: When Kasady and his symbiote are fighting for control at the bell tower, they are reflected inside Venom's eyes...who is lying on his back in the middle of the cathedral and is nowhere near and at the totally wrong angle for a reflection like that to happen. (01:15:50)

Venom: Let There Be Carnage (2021)
1 deliberate mistake
Directed by: Andy Serkis
Starring: Woody Harrelson, Tom Hardy, Michelle Williams, Stephen Graham
Continuity mistake: In the first "Present day" scene, the Ravencroft wardens enter Shriek's cell to feed her. She is lying on one side in the establishing dolly, and she's just lying on her back in the next shot. (00:04:10)
Cletus Kasady: Every decision we ever make, who do we leave behind? And how do we leave them? Waiting in the darkness, but the rescuer never comes.
Question: How did Patrick Mulligan get a piece of a symbiote? He was killed by Shriek, not by a piece of Carnage.
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Answer: It is deliberately never shown on screen, so unless it gets answered in a sequel the audience is left to speculate. Mulligan does come into direct contact with Carnage since Cletus is the person who kidnapped him. In addition, the fight between Venom and Carnage takes place all over the church with the pair constantly stabbing, slashing, and bludgeoning each other. A piece of either symbiote could be somewhere in that building. Again, though this is just speculation since it's never shown how Mulligan is infected.
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