I think ultimately you are perhaps concentrating on the issue of 2 or more partitions existing for an extended period of time.
You must be referring to monsterer's comments. I was always emphasizing that 2 or more temporary partitions can be tolerated if there is a resolution mechanism.
I was referring to you both.
No temporary partitions can be tolerated at all if the resolution of said partitions is the total destruction of one partition or another. This is the
only resolution method possible if the data structure is block based with POW or POS.
If you think otherwise, explain how two blocks secured with POW (or POS) could be merged between two block chains without loss of data? You don't need details on my, or anyone's protocols to explain how this is so.