Author here, I intersect the view frustum with the light's sphere of influence (and also take into account PVS info) so it still includes lights that are reach

Author here, I intersect the view frustum with the light's sphere of influence (and also take into account PVS info) so it still includes lights that are reachable by one bounce. Technically this means I might omit two bounce reflections but in practice this doesn't appear to be a problem.