It's ironic that the sample is blended with two other well known drum loops that most likely were not cleared either. From what I understand, drum samples are rarely cleared because they don't contain "music" in the traditional sense of music = melody + lyrics.
I can’t remember who they were talking about now, but I was listening to a podcast recently that had Questlove (drummer from The Roots) and he was retelling about the first time he met someone. As part of the intro he said something like “of course I know you, you sampled me on <track>” and then he laughed at their shock because they absolutely had not cleared the sample and he was just “hey, it’s alright. We’re cool”.
But it was wild to me to think that in the middle of a track there’s like a 2-3 sec bit of percussion and he can (correctly!) go “hey, that’s me!”. It wasn’t some looping thing throughout the song. Just a single sample. And he knew it was him playing it!