As you might probably know, at his fourth voyage, in early 1503, Columbus' expedition stayed for several months at pretty much the place that would IOTL be the entrance to the Panama Channel (maybe a few kilometers away at most).
POD: the local Indians tell Columbus about the ocean on the other side; Columbus, intrigued, sends a scout party, which returns with news of the other ocean. What happens?
Almost certainly implausible if not outright impossible, and that's what I'm (also) asking you about: maybe someone crazy enough decides to take the da Gama letter, go to the Pacific side, make a boat there (KonTiki-style, presumably, as they won't be able to take much of their tech, if 15th century tools can even be called tech) and just try to find India anyway? And if so, what are their chances of actually getting anywhere near actual India in time to meet da Gama? (Hint: I have no idea whether currents are anywhere near favorable for that - not even after consulting a map. )
...So what, how?
January First-of-May
POD: the local Indians tell Columbus about the ocean on the other side; Columbus, intrigued, sends a scout party, which returns with news of the other ocean. What happens?
Almost certainly implausible if not outright impossible, and that's what I'm (also) asking you about: maybe someone crazy enough decides to take the da Gama letter, go to the Pacific side, make a boat there (KonTiki-style, presumably, as they won't be able to take much of their tech, if 15th century tools can even be called tech) and just try to find India anyway? And if so, what are their chances of actually getting anywhere near actual India in time to meet da Gama? (Hint: I have no idea whether currents are anywhere near favorable for that - not even after consulting a map. )
...So what, how?
January First-of-May