It could be in the form of words or actions that he exhibits or in video as a proof why the fight will or never gonna happen.
The word duck is thrown out there far to much, boxing is a sport and a BUSINESS. The only clear sign of a fighter is ducking is when they do something that will cause them to lose out financially, not even in the short run but the long run.
When the interviewers last word is Golovkin, you can be certain somebody is about to duck, shat their pants and waddle off.