There are a few situations CSZ can net 41-45%. All of which involving "s4 xx slide" into bomb after the "...f2 ~ bomb" set up. Whether it be a punish (i.e. Tempest Lao MB spin, SZ MB Slide, Raiden MB Bobalay, etc), stuffing a jump out attempt or even a slow armor break. The full combo is...
S4 xx slide (bomb explodes), b2, jik, 21, 114 xx slide.
EDIT: S4 xx slide (bomb explodes), b2, f43 xx CDK, 21, 114 xx slide - 44-47%