Fusion of ...

Does "The postmodernity of such works lies in this fusion of viewing practices and the ambivalence of their demands" in the extract below mean:

"The postmodernity of such works lies in 1. this fusion of viewing practices and in 2. the ambivalence of their demands"?

Extract:

In the case of artists such as Sherman or Goldin, boundaries are not as such crossed or deliberately subverted; rather, they become less distinct, producing works that are somehow neither fish nor fowl – or perhaps both at once. Sherman’s ‘film stills’, for instance, position us according to the conventions of film spectatorship, but at the same time allow for critical reflection on those conventions. The postmodernity of such works lies in this fusion of viewing practices and the ambivalence of their demands. When similar fusions occur in advertising – as in the case of Revolution, or in one of Wieden+Kennedy’s latest examples, Tag (also for Nike in 2002, written by creative team Mike Byrne and Hal Curtis) – a similar note of ambivalence is struck, although, of course, under slightly different conditions.