overbloody flood does have trance like song structure but a very distinct goa feel to it. genetic - transmission also uses a lot typical trance elements, but surely is goa.
it gets really hard to draw a line when we get to union jack though. cactus even uses the typical psy-kick. still the whole album has a very light, transparent feel so i'd rather classify that as acid trance rather than goa.
it gets even worse when listening to cygnus x - synchomism. it has a rather progressive, trance-like structure but just as much goa feel as overbloody flood. why is it not considered goa?