Once I went to church with my class. I was afraid of heights and when the rest of the class went up to the bell tower I was left in the pews. I got bored and so I went behind the curtain where there was a stone muriel to look at it. I found myself in a room full of bright light and dozens of people, young, old, children. I looked down the corridor and it was full of light. A white haired, balding priest with glasses and a nun in a cornette glided from the light. They passed me, the priest looked down and smiled. I then found myself back at the pews, wondering what had happened.
That is one of many, many, many experiences. And no, I was not asleep.