yb: Daniel [and / or other worthy individuals who have died] NEVER claimed it and therefore NEVER failed any test.
Think this is pashut kebe’a bekutcha.
It’s takke pashut, but it’s not pashut that the Ramban meant that at all. That’s where you’re drawing a long bow, and I believe, unnecessarily.
If you pay careful attention to what Rashi is saying there, he writes that if Mashiach WAS someone who died, then it WAS Daniel. Neither the gemoro nor Rashi give any room for a second coming. So what did the Ramban have to be worried about? That the xian would say that it was yoshke even though he has died? If he would try to back his naarishkeit from the gemoro, he has no source. And if he’s going to deliberately misinterpret the gemoro, or totally ignore it, why would he care that Daniel did not make a claim?
Sorry but I still think that you’re trying to prove a point that you thought of but that has not source or even implication.