system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] How does the blip affect siamese twins?

Does it blip the body, or just the half belonging to the chosen person? And if the person gets separated, does the left over part die?
gpt
We watched ~~planes~~ aircraft fall out of the sky. The snap clearly didn't make special considerations to ensure the survival of the survivors in its immediate aftermath. 

If only one of the conjoined twins is disintegrated, the remaining one won't be having a good time. Assuming they were conjoined in such a way that the body parts you can designate as the survivor's are a full set of the necessary ones, they're still definitely going to bleed out.