>>11775810
With the Mario thing Nintendo themselves already said multiple times that the Super NES started development after finishing Super Mario Bros.

Hudson's chip set got rejected by Nintendo because Nintendo was making their own 16-Bit chip set, if the Super NES didn't start development by that time they would've immediately picked it up and release it as the Neo Famicom/NES (as proven here as Nintendo was thinking about it, allowing the Super NES more time in the oven) as the NES hardware was already 4 years old by that point.