Where I am from Australia... Legal separation is 1 yr I think .. Starting from the day the person walked out of the marriage .. Financially or physically .. Any proof that u no longer mentally committed to a relationship. So in my eyes Jagat walked out of his 'marriage ' a long time before he married gauri!
and that's just a lovely example you gave now you can apply it to anandi. Would any self respecting person take Jagat back after he slept with another woman? Made a home with her?