Continuity mistake: During breakfast, when Charlotte is telling about her boyfriend falling asleep and asks her friends to please help her, Carrie's arms position is inconsistent between the side and front shots: Up/down, arms crossed with left hand over right arm/ left hand vanished with right arm bare. (00:13:13 - 00:13:59)
Continuity mistake: When Miranda is making her bed she is holding the pillow cover with one or two hands depending on the shot.
Continuity mistake: When Carrie is ordering her breakfast Charlotte is looking at her, her right hand on her head. Her fingers are extended or not depending on the angle.
Continuity mistake: After the cute smoker-guy scene, Carrie is on Miranda's bed and her hands swap between crossed or not between shots.
Answer: After its initial run on HBO, SATC was syndicated for cable TV. Syndicated series are usually edited for nudity, language, running time, and use alternate filmed scenes, etc. Maybe you saw two different versions where an alternate narration was used.
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