Continuity mistake: Carrie is trying to drive a car up a hill and a grey car drives close to them very slowly. When the car is side by side to Carrie, the shot changes to a wide angle and the grey car has vanished.
Continuity mistake: Sarah Michelle Gellar's left arm is resting on the counter or not. Depending on the shot this changes back and forth.
Continuity mistake: When Carrie is on the WB set smoking, her handbag is next to the railing. When the guard arrives, the bag is closer to Carrie.
Continuity mistake: After the WB Studios guard puts a paper on Carrie's windshield, a grey car is driving parallel to hers. A shot later the car is behind Carrie's.
Continuity mistake: During breakfast Carrie asks Charlotte if they should get coffee or kill themselves, then the blue napkin under her hand suddenly appears on the table.
Continuity mistake: When Carrie arrives at WB Studios, the guard has no paper on his hand, but one suddenly appears in the following shot.
Continuity mistake: When at WB Studios, the position of the paper on Carrie's windshield is close to the brim in one shot, and away in the following.
Continuity mistake: When the girls are having breakfast a server off-screen is picking up the plates, but in the wide angle they disappear.
Answer: After its initial run on HBO, SATC was syndicated for cable TV. Syndicated series are usually edited for nudity, language, running time, and have alternate filmed scenes, etc. Maybe you saw two different versions where an alternate narration was used.
raywest ★