This one is the sort of thing where there are a bunch of assumption that shrouds reasonable on their own, but implasible in conjunction:

A1: you don't have to perfectly transfer your entire conectome to still be "the same person"; only things that are actually part of your current identity are needed

A2: if your identity changes gradually over time, even into something that if the change was faster it'd be considered disruptive, you're still "the same person".

A3: the human identity can be very extensively modified using behavioural techniques, hypnosis, and drugs that occur in the wild.

Then: you should be able to achieve immortality in a stone-age environment, by first modifying your own identity down to extremely small so it can be entirely transferred verbally, then modifying a victim more abruptly to a sufficiently similar state, and finally building that mind up again to be functional. Repeat for as long as you can maintain the dynasty.

EDIT: Hey! The OP specifically asked for outlandish ideas that seem like they wouldn't work! Am I just being judged relative the many ridiculously good posts here?