Has an AFL game ever ended 69-42?
Exactly once. On July 25, 2015, Geelong beat GWS 69-42, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 69-42 in league history.
That makes 69-42 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 70-42 has happened 1 times and 69-43 has happened 4 times.