Oh, come on! This is ridiculous.

Any silovik worth his salt would refuse to discuss such a hot topic over an open line. Also, some people noticed their talk is not even close to how two professionals both working in the kontora would speak. And how come 'the spy' didn't recognize his target's voice and manner of speaking? How come he didn't cross check 'the assistant' with his boss?

Not to mention that Navalny having such information about FSB agents means he's got some suspicious connections. Wouldn't he go to jail for this when he's back to Russia?