Alert and alarmed

This morning I was dreaming.

I was in a lift and just as it reached the ground floor my phone dinged, a message had arrived.

The ding was perfectly timed to be the chime on the lift, which is what it was to me in the dream.

It begs the question; did I know ahead of time that the message was going to come in and did I subconsciously perfect the timing?

Or are dreams that high a frequency that I managed to twist the story as the message noise arrived at my ears?

Coincidence, I rule out.