A lot more happened that I don't remember.
When I woke up I heard a clicking sound. Like the clicking of a clock, but not an even rhythm, like a stick tapping the nearby shelf, but IDK where it came from.. it was like 'tap, tap, tap- ...tap,tap-...-tap...tap, tap' (irregular rhythm for a few seconds, but very clear). I thought that it better not be aliens around or phantoms messing with my dreams. I almost wanted to go look out the window.
Robert Bruce says that it is normal to hear weird sounds when coming in and going out of the normal-awake and astral states though. IDK. Whatever it was...
I wish I remembered more of the details because other interesting stuff happened.
I woke up at 3am wide awake after falling asleep exhausted at midnight. Back for a nap, hopefully I get to fly again!... (the next dream actually turned out to be pretty dark with normal, evil human things. I think that had more to do with my past traumas and psychological fears (there was someone I once knew), my mind sorting things out, not a lucid dream or astral experience...)
But especially the flying part and talking to that man in the future, this felt like a milestone experience for me. It gave me hope for the future. I wonder if it will one day become normal for people to randomly talk to time-traveling astral 'Fliers' like that man did with me. Maybe we become psychic? These worlds were all richer and more colorful. This may all just be normal for astral/lucid dreaming experiences though. This 'dream' was no doubt colored by my own personal thoughts and emotions but was extremely cool!