Has an AFL game ever ended 34-15?
Exactly once. On June 21, 1902, Geelong beat Essendon 34-15, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 34-15 in league history.
That makes 34-15 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 35-15 has happened never and 34-16 has happened never.