"Did I miss something?" Unless he's somehow lost the ability to interpret subtext - understanding apophasis and its related mechanics had been something of a necessarily acquired skill for a linguist - he's not quite sure when the conversation took that shift. Tracking the trajectory of Seth's emotional state is easier, but without a direct tap into his mental progression from unrelated death to severe lack of self-worth Daniel honestly can't tell when he made that transition, or what logic was applied to it.