Has an AFL game ever ended 55-46?
It has. 55-46 has been a AFL final 2 times in 17,053 games. The first was Fitzroy beat St Kilda on June 3, 1912; the latest was St Kilda beat Richmond on August 20, 2016.
That makes 55-46 the 2496th most common final score out of 6,649 that have ever occurred in AFL. One point away, 56-46 has happened 2 times and 55-47 has happened 2 times. At one point the score disappeared for 104 years, between 1912 and 2016.