  We compute the disruption of mutual information between the hemispherical
subsystems on the left and right CFT$s$ of a Thermofield Double state described
by a Kerr geometry in $AdS_4$ due to shockwaves along the equatorial plane. The
shockwaves and the subsystems considered respect the axi-symmetry of the
geometry. At late times the disruption of the mutual information is given by
the lengthening of the HRT surface connecting the two subsystems, we compute
the minimum value of the Lyapunov index-$\lambda_L^{(min)}$ at late times and
find that it is bounded by $\kappa=\frac{2\pi T_H}{(1-\mu\, \mathcal{L})}$
where $\mu$ is the horizon velocity and $\mathcal{L}$ is the angular momentum
per unit energy of the shockwave. At very late times we find the the scrambling
time for such a system is governed by $\kappa$ with $\kappa t_*=\log
\mathcal{S}$ for large black holes with large entropy $\mathcal{S}$. We also
find a term that increases the scrambling time by
$\log(1-\mu\,\mathcal{L})^{-1}$ but which does not scale with the entropy of
the Kerr geometry.
