  We report on progress applying the stochastic LapH method to estimate
all-to-all propagators required in correlation functions of multi-hadron
operators relevant for pion-pion scattering. Large-volume results for $I=2$ and
$I=1$ pion-pion scattering phase shifts with good statistical precision are
obtained from an $N_{\rm f} = 2+1$ anisotropic Wilson clover ensemble with
$m_{\pi} = 240\mathrm{MeV}$. We also present a preliminary determination of the
$I=1$ pion-pion scattering phase shift and timelike pion form factor on an
isotropic $N_{\rm f}=2+1$ flavour ensemble generated by the Coordinated Lattice
Simulation (CLS) community effort.
