During the scene with the "free love" Catholics in the forest, the wide angle shots are taken during the day, while the close-ups and medium shots are clearly not during the day.
The ham that the two pilgrims steal has the "Parma" inscription on it (clearly visible when the Spanish gendarme inspects it). Parma ham is made in Italy.
Early in the film, as the two pilgrims are on the shoulder of the highway, the shadow of the boom mic is clearly visible moving from right to left across the grass and finally off screen.