Continuity mistake: In the scene where Forrest goes and visits Jenny (and is introduced to his son), there is an iron on the ironing board in the background. It stands up, then down, then up. The child's artwork in the background also disappears. (01:56:25)
Continuity mistake: In Washington, when Forrest runs to meet with Jenny he runs between the same people twice. Check the man on the right with the black top hat and a violet ribbon.
Continuity mistake: When Lieutenant Dan arrives to be Forrest's first mate, the shot facing Dan shows Forrest stepping onto the boat's ledge with his left leg, but in the very next shot facing Forrest he is suddenly using his right leg.
Answer: Presumably, Forrest called Dan and invited him. He seemed surprised to see Dan standing. The last time Forrest saw Dan he was in a wheelchair. His reaction was all about Dan's "magic legs".
af4dable ★