Maggie, Calvin's wife, does talk to Agent Harris - unfortunately, their conversation is exclusively focused on Calvin and Bob. Darla only talks to Bob.

In the unrated version, Maggie and Darla talk to each other during the dancing at the reunion (they exchange names and talk about how they each look great, and how they haven’t changed since high school). It’s brief (and I don’t know how different versions of the same film are counted; for example, would Star Wars pass a Han Solo speaks to Jabba test?), but it’s a pass.