Most of the extending material served to expand the flashbacks: in the original 25-minute episode, Alan's story began with his arrival at Grandma's cottage, omitting the Parola Sands race and events immediately before and after.
In the initial 25-minute episode, Alan's narrative started with his arrival at Grandma's cottage. The flashbacks were expanded by adding material that covered events before and after the Parola Sands race.