General & Others Non spoiler Blackbeard question

#1
Currently watching wano and I saw teach Blackbeard and then I just remembered that he stole the other Beard's power, so it's crazy we haven't seen an explanation for that in like 500 episodes unless I missed it, have they revealed yet in the manga how he did that? Just yes or no or if they already explained it in a past episode, you could say so
 
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