Molly makes North by Northwest discovery

Last night Molly and I were watching North by Northwest, and she noticed something I daresay only the most vigilant of Hitchcock scholars may have observed themselves.

After the Saul Bass title sequence, when the last credits are rolling over various crowd scenes, Molly saw the same woman walking out of a building in two different shots. In fact, it's the same shot, only from slightly different angles.

Was this some inside joke of the great director's? Or did his famous penchant for the smallest of ratios of film shot/film used catch him up short, so that he had to double up? And why did he shoot the same thing from such a similar perspective? Or was the difference achieved in the lab?

Can anyone find anything on the Web addressing this?

Linkateria:

• North by Northwest title sequence - look at 1:40 and 2:06 to see the shots
  

Comments

[kcb]

Maybe one shot was taken from the North, and the other from the Northwest?