Has an AFL game ever ended 86-56?
Exactly once. On August 15, 1903, Geelong beat Sydney 86-56, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 86-56 in league history.
That makes 86-56 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 87-56 has happened 9 times and 86-57 has happened 2 times.