Why this module is the hard one
The rest of a legal AI product can lean on retrieval quality. Due diligence adds a second problem: the reviewer is looking for absences, inconsistencies and things that should have been in the data room and are not. A system optimised to answer questions is poorly shaped for finding what nobody asked about.
What it does not claim
I make no legal conclusions and no assessment of risk. The module organises evidence and shortens the search. The judgement stays with the professional, which is both the correct division of labour and the only defensible one.