Louis XXIV
Le Roi Soleil
I can't comment generally about contact (I'm unaware of whether the Spanish learned of the Inca from Mesoamerica). I was talking specifically of exchange in flora and fauna, which happens on a more gradual scale anyway (certainly, Mesoamerica could have and did trade with Northeast North America, but having corn adapt to the climate took a considerable amount of time). I could see the same for Quinoa perhaps (although I doubt it) or Potatoes (which do like rocky soil, so that makes sense). But one of the interesting things is that the Maya had wheels (on children's toys) but no beasts of burden. The Inca had beasts of burden but no wheels (and, admittedly, fairly mountainous terrain). Why did the two never interact? In addition, sources of protein like Guinea Pigs would have been really easy to trade without much difficulty.
So an awareness of each other (and probably indirect trade) is one thing, but exchange of flora and fauna is an entirely different thing.
So an awareness of each other (and probably indirect trade) is one thing, but exchange of flora and fauna is an entirely different thing.