>>5775
>in that situation, I assume they're either possessing or incarnated as humans from that different timeline, right? Meaning, if you hypothetically broke into their house
This situation was pure cheat. They'd have different demons play the family members different days. I worked with one of them, asked the girl: Why is your hair curly today, it used to be straight? She replied: Sometimes it's curly, sometimes it's straight, as if talking about a natural phenomena. When she went outside to wait to get picked up by her dad at the roadside, she was there, I looked away, and one second later she was gone. Another time she appeared in the shadows behind the house, and it was daytime so it wasn't that dark there, I saw her manifest. They cheat pretty well and there is no one going to think anything of it, because only a crazy person does that. You wouldn't do anything to them, if a robber went to their house, it wouldn't be there, they'd get lost, or the car would break down etc.

>Is it possible for the demon to instead just appear in front of the guy and physically rip his throat out?
Consensus reality decides what will happen. You can kill a person with magic, but if this is "unlikely" to happen the person's soul will go away, and an NPC will replace him. Some people are impossible to kill for this reason, like Biden. You can hex him lethally any number of times, his original is gone since long, but he represents a mass of karma, and it will remanifest in a split second as an NPC doll. It's not so easy to change things, you have to play the game.