None. Way of the world, it happens. Random, uncertain, probable. For me it is science. For example, my younger grandson developed fever he day before yesterday. He is OK today.
Have you ever had meaningful synchronicities that do not need to have a cosmic or deified cause or relation?
The issue, of the synchronicity debate, for me, is that a synchronicity which is absent of deity influence is still left-wing politics, and left-wing politics means that I am open.