Has an AFL game ever ended 156-43?
Exactly once. On June 27, 1964, Melbourne beat Richmond 156-43, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 156-43 in league history.
That makes 156-43 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 157-43 has happened never and 156-44 has happened never.