What Is the Connection Between Chaelon and Hoyd?

The vision of a child chalon, was so impactful to hoyd that it aroe. So the question is, why? What? When? Ow? There are a spectacular number of theories. Many people have speculated it's just about hoy d knew about radiance. And we can kind of assume that she is at least one of the earliest, first, early radiance in this time period anyway.