I would like to ask a question
Are the Olmec related in anyway to the Incas or is that too far south?

Two issues long debated among Pacific and American prehistorians are (i) whether there was a pre-Columbian introduction of chicken (Gallus gallus) to the Americas and (ii) whether Polynesian contact with South America might be identified archaeologically, through the recovery of remains of unquestionable Polynesian origin. We present a radiocarbon date and an ancient DNA sequence from a single chicken bone recovered from the archaeological site of El Arenal-1, on the Arauco Peninsula, Chile. These results not only provide firm evidence for the pre-Columbian introduction of chickens to the Americas, but strongly suggest that it was a Polynesian introduction.

Well as I've stated before I'm not against the idea of ancient sea traders but to date there is no concrete proof of such travels yet, and on top of all that there is no DNA evidence nor are there verifiable artifacts.