Xaden and Bodhi

This is not about the brother theory lol. Wanted to see if I missed something. So we know Sgaeyl was bonded to Xaden’s grandfather who died in the quadrant. Xaden’s dad and Bodhi’s mom are siblings. If xaden’s grandfather died in the quadrant and it was Fen’s dad, then it would mean he would have had to father two children before graduation (Fen and Bodhi’s mom). While not impossible, it seems unlikely. So my two streams of thought: 1. It was Talia’s (Xaden’s mom)dad or 2. Bodhi’s mom and Fen are half siblings through their mother. Maybe this won’t come back but I feel like this could come back in a meaningful way either bringing Talia back into book 4 or 5, or contributing in some way to Bodhi’s character arc. Thoughts?! Anything I missed here that can help provide clarity in the family tree?