2. Our original timeline is going on with that version of us, and this one is going forward this version of us.
3. I believe it originally started to splinter off when I had to rewind Hong Kong, running very close together, but I'm uncertain if something else might have also contributed to sudden and further destabilization.
4. It would affect real time, as would a revolution, but ok?
5. This is real time, in this universe, and for each of us. So death would be death. As far as I know, but having died so many times I lost count, I can't say I recommend the experience.