I read this online,
The pilgrimage, which in medieval practice combined a fundamentally religious purpose with the secular benefit of a spring vacation, made possible extended consideration of the relationship between the pleasures and vices of this world and the spiritual aspirations for the next.
The confusing part is whether it refers to "consideration of the relationship between the pleasure and vices of this world and of the spiritual aspirations" or "consideration of the relationship between ...of this world and the spiritual aspirations"? Which one of the two ands goes together with between?