Papanca and Dependent Origination

What is the relationship between papanca and dependent origination? Both are chains of cause-and-affect (which is what the doctrine of kamma points to--causation). And some of the links in the chain overlap. But they aren't exactly the same. So that raises a question for me, one I'd like to have a better understanding of before giving this presentation.

For now, I want to record what Varela et al. say about causality and the pragmatism of Buddhism:

The Buddha was said to have discovered on the eve of his enlightenment not only the momentariness of the arising of the aggregates but also the entire edifice of causality--the circular structure of habitual patterns, the binding chain, each link of which conditions and is conditioned by each of the others--that constitutes the pattern of human life as a never-ending circular quest to anchor