I'm glad you caught that. Remember, Darcy believes that his observation of Jane is correct. He does not regret separating Bingley from her, even after Hunsford. His mischaracterization of Jane's visit in London builds Darcy’s confidence in his attitude. It is only at Lambton, when Bingley is waxing poetic over the ball at Netherfield, does Darcy doubt his belief. Even then, he must see Jane’s reaction to meeting Bingley again at Longbourn with his own eyes before he admits he's wrong and makes his confession to his friend.
Darcy and Elizabeth are well-matched. They both have too much confidence in their own abilities. It makes them arrogant. I wonder how their first year of marriage goes along, don't you?
Jack Caldwell
Ramblings of a Cajun in Exile