In her post "Full or Half Siblings" on DNA Explained (posted 3 Apr 2019), in the section Unusual Circumstances, Roberta Estes says:
These cases tend to be quite messy and should be unraveled with the help of a professional.
and at the end she gives wise advice:
Regardless of the genetic outcome, I hope that you’ll remember that
your siblings are your siblings, your parents are your parents
(genetic or otherwise) and love is love – regardless of biology.
Please don’t lose the compassionate, human aspect of genealogy in the
fervor of the hunt.
While experts are welcome to post on Genealogy and Family History Stack Exchange, most of us are enthusiasts, and most of us are generalists. We are not going to be experts on every topic that is asked about on the site. Questions like this are best answered by professionals like the ones Estes recommends in the post I've linked to in this answer.