That's why BSA is covered in any competent due diligence done before the acquisition.
So very true and very important that compliance, BSA, etc is brought in early in the process. I'm fortunate that with my merger which was final last year, I was one of the initial people included when very few knew about the merger so it allowed sufficient time to review exam reports, audit reports, etc so I could identify what issues there were and what I'd be dealing with.