It seems as though nobody is knowledgeable enough to figure out as to why generator points of 2 curves secp and secq256k1 both when divided by 2 generate the same coordinates. Either the so called "experts" and "cryptographers" are clueless as well or they refuse to reveal the secret. Asking questions on other platforms seems to produce the same scripted answers.
It's just because both generators were created by doubling the same point.