Possibly... Depending on what they paid, or felt they may have to pay post settlement, or later even given successful Reexams results..
Precisely, it's ALL about probability, and once it exceeds .5 it changes to cost-effectiveness.
We will agree to disagree on the KSR/Obv issue and how it may influence settlement...
Further to your "Possibly..."(above), didn't we agree to agree?
Be well