Has an AFL game ever ended 68-66?
It has. 68-66 has been a AFL final 3 times in 16,622 games. The first was Geelong beat Fitzroy on September 2, 1905; the latest was North Melbourne beat Sydney on May 5, 2018.
That makes 68-66 the 1534th most common final score out of 6,607 that have ever occurred in AFL. One point away, 69-66 has happened 3 times and 68-67 has happened 4 times. At one point the score disappeared for 104 years, between 1914 and 2018.