Continuity mistake: Despite having the Phoenix power at the end of X-Men: Apocalypse, which manifests around her as a Phoenix firebird and she uses to defeat the titular villain, Jean Grey doesn't actually get merged with the entity until 9 years later in this movie.

Dark Phoenix (2019)
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Directed by: Simon Kinberg
Starring: James McAvoy, Jennifer Lawrence, Jessica Chastain, Sophie Turner
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Suggested correction: Jean used her full psychic powers in the previous film, not the Phoenix Force. Even without the Phoenix Force she was an incredibly powerful, Omega Level mutant.
The Phoenix firebird is literally shown to be emerging from Jean's body when she kills Apocalypse. She can't both have the Phoenix firebird already within her and then somehow also have it invade her body in this film. The mistake is valid, and I would argue it should be listed as a plot hole more than a continuity error.
Smith: You're special, Jean, and if you stop fighting that force inside you, f you embrace it, you will possess the very power of a God.
Question: When the soldiers were taking the mutants to the containment center by the train, Kurt shouts towards the soldiers "Your kid was right about us. We could help you." What does he mean "your kid"? (01:26:45)
Chosen answer: Four minutes earlier, one of the MCU soldiers walks past Kurt and says to him "My kid used to be a fan" (of the X-Men). So later on, Kurt yells to the same soldier "Your kid was right about us. We could help you!", meaning that he and the other mutants can be trusted to help them fight the D'Bari attackers.
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