Has an AFL game ever ended 67-66?
Yes. AFL has seen a final score of 67-66 3 times. It first happened on May 7, 1921, when Sydney beat St Kilda, and most recently on September 18, 1976, when North Melbourne beat Carlton.
That makes 67-66 the 1534th most common final score out of 6,607 that have ever occurred in AFL. One point away, 68-66 has happened 3 times and 67-67 has happened never. At one point the score disappeared for 55 years, between 1921 and 1976.