Has an Olympic Basketball (Men) game ever ended 70-65?
Exactly once. On November 23, 1956, Uruguay beat Bulgaria 70-65, and no Olympic Basketball (Men) game before or since has ended that way. When it happened it was a scorigami, the first 70-65 in league history.
That makes 70-65 the 126th most common final score out of 698 that have ever occurred in Olympic Basketball (Men). One point away, 71-65 has happened never and 70-66 has happened never.