hmmm weird, i just reread 206 too at mangavolume.com and it seem that the only filler content in the episode is the fight scene and the stuff that happen after kenpachi became captain. Ikkaku state that he taught renji how to fight, yumichika show up in 2-3 frame wearing clothes that was similar to the anime and kenpachi speech about how he is lucky that he survive was also in the manga.