The earliest version of the series had the whole of each character’s POV chapters following on from one another. Ahni I, then Kestrel II then Srese III, then Sard IV.
Then, because Ahni’s chapters and Kestrel’s chapters often trod the same ground at the approximately the same time, I started a melded version. I seem to recall deciding that introducing Kestrel at the beginning of Ahni’s trials would prevent reader-resistance against their romantic liaison … him being born an ‘enemy’, after all.
Numbering of chapters might seem confused, though the sequence of posting should make perfect sense. Let me know if I make a mistake?