Wherein

Does "wherein" in the following text refer to "temporality of dreams and fantasies" or "dreams and fantasies"?

Text:

For Surrealists such as Ernst, the technique of collage itself was viewed as a material analogy to the processes of displacement and condensation of the dream-work, collage being seen as a deviant pictorial language that emulated the temporality of dreams and fantasies wherein‘past, present, and future are strung together on the thread of a wish that runs through them’.