I have been chatting with the other party for some time and believe they are a legitimate buyer. However, they suddenly mentioned they can introduce me to a 'high-return investment opportunity'. Is this normal?

This is the typical pivot point of investment scams—building business trust first, then steering toward investment fraud. Normal B2B buyers do not proactively introduce investment projects during procurement negotiations. Once conversation drifts from product inquiries, payment terms, delivery schedules, and other business matters, raise your alert immediately. We recommend saving screenshots of the conversation and recording the contact's suspicious behavior in Patisco's Buyer Management system, while simultaneously reporting the account on LinkedIn.