I think the TA may have been confusing Cozumel with Corazal, have seen that happen oft time before. And like Barb stated, it would take a hellva lot longer than 90 minutes - geesh why don't they look at a map!
Jackie- could ya be sure to have a fresh bucket of oats ready for the horses, I think they will be mighty hungry at 540AM!
Have a great trip kiddo!