Originally Posted by billmarq
It's the old inner goal/outer goal thing.
there is also a Role Reversal that goes on. The backstory of Ilsa leaving Rick is that she was protecting him from being considered a conspirator.
these contridictions ask questions like, were they really in love?
End of Act one, she lets him go (train scene)
End of Act Three, he lets her go (plane scene)
His letter of transit was her leaving him.