>>48300131>>48300569For those who have not understood this sequence it is the POV of Ash meeting each of them but by chance, while he continues his journey alone. Brock in his gym, Misty on the way, Tracey on an island drawing, and so on with the others, each one gets a dejavu when their gazes meet Ash, some with surprise, some with joy and a few with sadness.
It was a cruel and cute way for the director to emphasize that this would be a parallel story where all the characters exist, but each would take another path. As well as separating his project from the main anime, which after Koko I doubt that it will continue.