Daniil considers pressing - he has been a check and balance to Ivan in the past, whether Ivan wanted him to be or not - but doesn't, ultimately, letting it lie. He'll find out the rest of that situation eventually, inevitably, and there's no reason to push it now. Either one of them will tell him or he'll figure it out for himself; neither of them are so mysterious as they think.

"Familiarity breeds contempt, that is the saying, yes?"