Has an AFL game ever ended 90-56?
It has. 90-56 has been a AFL final 4 times in 16,622 games. The first was Sydney beat Hawthorn on June 14, 1941; the latest was Essendon beat Carlton on August 2, 2003.
That makes 90-56 the 947th most common final score out of 6,607 that have ever occurred in AFL. One point away, 91-56 has happened 2 times and 90-57 has happened 7 times. At one point the score disappeared for 53 years, between 1943 and 1996.