Other mistake: In one scene, Vincent asks one of his subordinates how he is after getting shot. The reply is "Banged up, but I'll live," but the subtitle reads "Hang up, I'll live." (02:06:50)
Other mistake: After the post-bank robbery shootout, a TV reporter is heard describing the shootout as taking place in a "small southland neighborhood." But earlier one of the detectives was heard ordering road blocks at Flower and Figueroa, meaning the gun battle occurred in Downtown Los Angeles. Hardly a small neighborhood.
Other mistake: In the scene where Pacino is talking with Albert outside, when Pacino starts singing, the soundtrack on Albert's dialogue is way off.
Other mistake: When Hanna is tailing McCauley in the helicopter, he is informed that McCauley is headed east on the 105. When Hanna pulls McCauley over, you can see the highway sign saying that they are on the westbound 105.
Other mistake: Drucker is able to shoot out a tire on the getaway car at a distance of at least 30 yards, probably more. Later in the scene, he fires at Cherrito from a much closer distance and doesn't even graze him. Apparently shotguns have selective range.
Answer: When Pacino is comforting his wife at the hospital, she says "She chose you. She picked your place." Guess the implication is he had been staying there for a long time and both Justine and Lauren knew where that was. Best explanation I have been able to find.