I think coyotes have been known to enter people’s open doors and attempt to drag small children from the house. Some wild predators fear people only because they have been hunted for centuries (e.g. wolves, black bears). Once hunting stops, they may become dangerous again.
Perhaps, but I’ve never heard of coyotes going after adult people is a head scratcher. Additionally, I’ve never seen them hunt together. Many odd and curious things do happen though.