well first the film starts with this quote:
"A great civilization is not conquered from without until it has destroyed itself from within"
than you see bloodthirsty mayas killing themselves and at the end the spanish conquerers land led by a priest. all the great scientific achievements weren't mentioned in the movie. and the maniac medicine man didn't even foresee the solar eclipse? there's a lot cliché in this movie, but on the other hand, the hiatus happened indeed.