No, that's an incomplete statement.
Section 1026.24(d)(1), OI #1 tells you: "By virtue of the definition of downpayment in §1026.2, this triggering term is limited to credit sale transactions." Section 1026.2(a)(16) defines credit sale as "a sale in which the seller is a creditor."
Disposition of OREO is the most common situation where a bank can have the dual role of creditor and seller of the property being purchased/financed. The property being sold does not have to be real estate, however. Instead, it could be personal property--bank-owned furnishings, equipment, "company cars", or repossessed vehicles, for example.
Only when the bank acts in both capacities (seller and lender) does "downpayment" become a triggering term in closed-end credit.
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...gone fishing.