Was Chauncey Gardiner some echo of Rudolf Hess perhaps - remember Jersey Kozinski ( sp ) the author of Being There ran from the Nazi’s as a child … sometimes we are drawn to the very things that frightened us as children
The last one in the house didn't know how long they were staying for, leaving the door open means a short visit, by saying 'do you live in a barn' the resident has instructed him to close the door.
You know when you enter a house with a few friends, maybe you’re the last one in the house and someone quips “ what did you grow up in Barn? That Don’t make sense. barn door is being opened or closed is very important.