Amber Heard and Jason Momoa's 'lack of chemistry' made 'Aquaman' editing 'difficult': Warner Bros.

Walter Hamada, president of DC Films, appeared as a rebuttal witness for Johnny Depp as the actor's defamation trial against ex-wife Amber Heard rolls on. Hamada, who appeared via deposition video, said that Depp had nothing to do with Heard's reduced role in Aquaman 2 — a claim Heard made in her counter suit. However, the actress's chemistry with Jason Momoa was apparently a concern to executives, though.

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