Different Nephis

I have always felt that Nephi who kept the record in 4th Nephi was not the same as Nephi the chief disciple of Christ but I also felt that I couldn’t prove it. Today I realized the proof. Neigh the record keeper died decades after the last of the original disciples we said to have died – all but the three who didn’t die thus he could not be I’ve I’d the three or one of the other nine. No more wondering if I could be wrong on that point.