I'm not sure it directly relates to what the op is talking about but I do occasionally have episodes of deja-vu. I can never remember if I see it in a dream or just in a random thought after it happens. The strange thing is with me its never anything major it's usually some minor occurrence like me getting into the car and maybe seeing a blue car driving down the road at that instance or seeing a interaction between a few people at a random moment. The aforementioned events will happen and I'll stand there for a moment like "hold on I've seen this happen somewhere before." It doesn't happen often but it's just weird.