I've experienced things which support both an afterlife & the demonic.
yes, I know--you drink too much...you hallucinate when you drink
So multiple witnesses equate to hallucinations?
I was sensing a dark heavy force around at a guy in a bar one time, and without saying anything, my friend said can you feel the darkness around him.
Another time, I sensed a spirit ghost in my old house of an old lady, and someone without me telling them sensed the same thing.
When I was little on Halloween we went into a graveyard when a root snapped out of the ground under us, with my friend & myself both running.
These are some might coincidences.