Another proof that stuttering is cognitive?

Another proof that stuttering is cognitive? So I recently noticed something. Whenever I face a block, I immediately can get the word/sentence out whenever the person starts talking. I asked a pal to interrupt me today whenever I blocked to proof this. It literally happened everytime he interrupted me, the sentence just flew the moment he started talking. I’ve said on here before that stuttering is imo 90% cognitive- The more attention there is to it, the more you stutter. When someone starts talking, there is a lot less attention to your stutter. Could be another reason, but the exact same thing happens when someone looks away or something else grabs their attention. Anyone have the same experience?