Dante wasn't the smartest man by any means, he had no formal education or secondary education. He did like to read things when he could and relied mostly on street smarts and talent. He did, however, possess the ability to synthesize information that was relative or important in some way and log that information away.

"Nero...the only other person who would stand a snowball's chance in hell would be Nero," and Dante wasn't exactly thrilled that this burden had been left to him, "...I never wanted him involved though, didn't want to have the boy kill his father."

And that was if Nero had the strength required to kill Vergil, if he could pull it from a place where Dante couldn't. There really wasn't anything he could do from here so worrying about it served to do nothing, logically Dante understood that, but it wouldn't leave him alone.

"Yeah...yeah I know..." he stilled Astarion's hand drawing it to his lips to press a reassuring kiss to the inside of his wrist, "...and thanks for listening to me yammer...and for everything else."