How does the author use foreshadowing in Talking God?

In Chapter One, the author, Tony Hillerman, foreshadows the connection between the two major plot threads of the novel by mentioning conservator Henry Highhawk and the Chilean embassy's interest in a jewel-encrusted golden mask in consecutive paragraphs. This technique subtly links the two unrelated events in the reader's mind, so that no one is surprised later to find that they are intertwined.