Im pretty sure they got married (on tonalu, we even saw parts of it), otherwise the whole inheritance would be way more easy (mc inherits from mom, jaye from her dad) instead of shared wealth.Well, the loophole in CS is that the parents never got married (IIRC) so they're technically not legal step-siblings, even though they grew up together and all that jazz...
So yeah, again, just have Santiago and Adriana not legally married, but just living together for 15+ years, and there you go... legalities and technicalities fixed. And btw, considering neither Adrianna or Layla/Alexis have the Navarro surname, that's probably the case already... my point being is that Santiago is their "step dad" only in affective terms, he probably didn't adopt them legally...
The loophole was the parents being dead when the relationship started and nowadays by science mumbo jumbo and researchers fucking up.
But yeah i think Adrianna and Santi are maybe simply not married too
Whats confusing when Adrianna talks to her husband at the night in the kitchen, he says something like they should try again as they always wanted three kids .. which really didnt sounded like them being adopted .. so i dont know