Diligence teams are good at the things diligence teams are built to check. Financials, contracts, customer concentration, legal exposure. 

What they’re structurally not good at is anything that only shows up when you’re actually running the business day to day, because six weeks of data room access doesn’t replicate that no matter how sharp the team is. 

The pattern I see most often, talking to people who’ve come in post-close to clean things up, is a gap between what the numbers say and what the operating reality is underneath them. 

A company can show healthy gross retention on paper while quietly propping it up with discounting that never made it into a clean cohort analysis. A company can show strong logo growth while masking that half the new logos came through a channel partner relationship that’s about to end. None of this is fraud. It’s just the kind of operational nuance that doesn’t survive being compressed into a data room spreadsheet, and diligence teams working against a tight timeline can only dig so deep into any one thread. 

The other consistent miss is culture and capability at the layer just below the management team presenting to you. Diligence talks to the CEO and CFO extensively. It rarely gets meaningful time with the VP of Sales or Head of Customer Success, the people who actually know whether the growth story is repeatable or whether it’s been carried by two exceptional individual performers who could leave at any point. That gap is invisible in a data room and glaringly obvious three months into ownership. 

If you’re the one walking in post-close, the fastest way to close this gap isn’t more analysis of the numbers you already have. It’s structured conversations with the layer of the organisation diligence didn’t have time to reach, asking specifically what’s propping up the numbers that isn’t visible from outside. 

People at that level are often surprisingly candid, partly because nobody’s asked them directly before, and partly because they’ve usually been waiting to tell someone.