To this day, I don't know who or what was piloting the cylinder.
To anyone who thinks we are the only life amongst kazillions of stars, planets, and galaxies, maybe it was humanity from the future, who knows?
I have no idea what I saw, much less what you did. I cannot make a judgment call on this.
OTOH, statistics alone puts me in the camp that there is a good probability of life arising elsewhere in this universe. Does that mean I think that aliens visit our planet? Nope. The distances and physics alone diminish that possibility. SETI is still our best chance for detecting another tool building species.