Has an AFL game ever ended 47-40?
Exactly once. On April 28, 1928, Melbourne beat Geelong 47-40, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 47-40 in league history.
That makes 47-40 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 48-40 has happened never and 47-41 has happened 2 times.