this is pretty much confirmed that trade did exist and no one doubts that the sporadic trade existed also unlike say polynesia the ecuatorians could stop before reachingThat is a plausible journey in my opinion, given that one Pre Colombian Native American South American Ecuadorian raft was demonstrated to be capable to sail to Costa Rica, while other Pre Colombian Native American South American rafts have been sailed by various archeologists to places such as Polynesia and even Australia, with the most famous expedition being that of the Kon Tiki by Thor Heyerdahl.
mexico again the distance would be made shorter now if we truly wank the aztec to vassalize Cuzcatlán which i dont know if they could and the inca expand to the some where in the rich gold choco region of colombia then the distance falls even more to 1500 km
even then otl likely voyages did not take long this from colima to ecuador which is about 3500km
but as seen there is something intresting here it takes in the best case scenario little more than a month and half to get from ecuador to mexico but it takes in best case 3 months to same from mexico to ecuador this from what i read north of Tehantepec to go south the winds are not that favorable.
assuming otl distance llamas would in the best case scenarios have to survive 1 and half month at sea to reach colima