The surprisal framework models allocation of processing resources (in this case, activation) among disjunctions of competing hypotheses, which are maintained for some amount of time in parallel, whereas the framework described here can be taken to model the allocation of processing resources (in this case, memory elements) among conjunctions of incompletely recognized constituents within each competing hypothesis.
2 in this view, there are two ways to simultaneously activate multiple concepts: disjunctively (sharing activation among competing hypotheses) and conjunctively (sharing activation among unassimilated constituents within a hypothesis).