Continuity mistake: When Lane unpacks the groceries Zack has brought, she takes out the bananas and then the apples, twice in a row.
Continuity mistake: In this episode, when Logan goes to see Lorelai to ask her permission to propose to Rory, Lorelai asks Logan if he wants any french fries. They sit down and the to-go container is open, when the camera zooms in and then back out it's closed again.
Chosen answer: Lorelai and Christopher get married impulsively in Paris but they get divorced shortly after returning home. I don't know the exact number of days or weeks but they definitely weren't married for more than a couple of months.