Dream Time

I had heard many times that dreams do not happen in "real time", but when you experience an activity in a dream and that activity seems to play out for an hour, for example, the real dreaming time may only be a few seconds.  I have anecdotal evidence that disputes that.  I had a dream once in which I was with several people on the parking lot at a place where I used to work.  I had in my hand a small electronic device, probably a radio.  Suddenly there was a loud beeping sound and everyone  looked at my radio.  I told them it was turned off, but they still thought I was the source of the noise.  I opened the back and removed the batteries.  The beeping continued and people across the parking lot were looking at me.  Then I noticed two telephone repairmen on a pole above us.  They had some kind of instrument that was causing the noise.  This whole episode consumed about five minutes.  Then I woke up and shut off the alarm clock which was making that exact sound.  The clock showed it had been alarming for five minutes.   To me that says  the five minutes of clock time exactly corresponded to the five minutes of dream time.   QED!