Q156

For the application of the Factotum class ability Cunning Insight, is the ability damage dealt by a martial maneuver like Bonesplitting Strike, which is a flat amount tacked onto the damage roll, considered a part of the overall damage roll, and thus Cunning Insight can be applied to it, or is it considered separate, and thus not subject to Cunning Insight?

For reference, this is what the pertinent text says:

If your attack hits, the target takes normal damage as well as 2 points of Constitution damage.