Has an AFL game ever ended 66-65?
Exactly once. On August 7, 1971, Footscray beat Essendon 66-65, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 66-65 in league history.
That makes 66-65 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 67-65 has happened 2 times and 66-66 has happened 6 times.