Preface: I only just started reading book three, Knights of Crystallia. If my questions are answered further down the line, please just say RAFO. If they're not, please say so.
We know that if someone marries a Smedry, they got their spouse's Talent. Like for example Shasta got Attica's Talent.
But what if two Smedries marry? Do they get each own's Talents in addition to the ones they were born with?
And what about polygamy? For example, if there would be two Smedries and a non-Smedry in the marriage, would the non-Smedry get both? One of them? Some combination of them?
(I blame Quirk mechanisms from My Hero Academia for instilling these questions in my mind)