Arso and YB, I cannot reply to that which happened before my time and I’m unaware of. If you find a sicha printed, (they’re all the same) where the Rebbe said no one at all will be hurt or killed, there’s something to talk about. And yes, it makes sense that the Chassidim were excited about the Rebbes prediction and applied it in ways that the Rebbe himself had not said (although within the same spirit.)
Regarding the Ramban, like I said it’s a plugsa bemetzius. What I remember is either true or isn’t. If someone knows and can reference, that would be helpful.
Regardless, I posted other sources to back up what I said about the stages.
Arso, the point is they all say the concealment period is different times. It’s not Halacha, and obviously the geula will not be delayed when we merit it because we have to fit exactly 45 years + the bit he mentions.