In Fight Club, before we see the scene of the Narrator (Ed Norton) meeting Tyler Durden (Brad Pitt) for the first time on the airplane, we see another scene - here the narrator is passing on an automated walkway and Brad Pitt (Tyler Durden) crosses him.
I dont have the screenshot but here are some more details for recognising the scene:
The narrator is saying this dialogue:
If you wake up at a different time, in a different place, could you wake up as a different person?
And at that very time we see the narrator going by on a automated walkway and Brad Pitt dressed up like Tyler Durden is passing in front of him, going the opposite way.
So who is this guy? Is he the narrator's imagination i.e. Tyler Durden? Because this means that the narrator was already imagining 'Tyler Durden', before he starts speaking with him for the first time.
Or is he a real person who happened to pass the narrator just by chance. This can also mean that there really was a guy who looked like Tyler Durden and he inspired the narrator to model his own imagination on him.
I mean Tyler Durden looks exactly like the guy who crosses the narrator on the walkway. So was Tyler Durden modeled on this real guy or was that Tyler Durden itself (of course it is the narrator's figment of imagination)?