coffee addict: “I thought Lubavitch now holds that moshiach can come from the dead which is why I said Rav Shach”
Sorry, you clearly don’t understand official Lubavich policy. Please allow me to enlighten you.
1. Either the LR is alive, and Mashiach must be someone who is alive, hence the LR is Mashiach.
2. Alternatively, if the LR is not alive, then Mashiach must be him regardless.
There is no room for anyone else who has died to be Mashiach. In fact, there is no room for anyone else to be Mashiach, period.
And this is all based on clear non-existents sources.