Protocol of the undying tyrant +vect aura’s

I played a game against drukhari recently and this interaction came up…we weren’t really sure if I would need to pay 2cp or 1 cp for the protocol since the model was dead. I’ve googled but can’t seem to find an easy answer for this. So does anyone know of “recently deceased models” remember their last known location 😅. And while we are at it: can an overlord use “my will be done” on the protocol? Does his rule still work while dead? I’ve got the feeling that this interaction will come up again since his archon has a tendency to kill my characters 🤣🤣.