So if someone sues a subsidiary of the group they are banned in the entire group? That must be really tickling the layers when it's time to ask for damages in

So if someone sues a subsidiary of the group they are banned in the entire group? That must be really tickling the layers when it's time to ask for damages in civil cases: "well, we're asking to hold the entire group in solidarity for damages, since they conduct business in solidarity, whatever subsidiary we are actually naming in the suite".