We are not the only life, nor the only advanced life, nor yet a born routinely spacefaring life, in the universes.
Alien space-time travelers, alien navigators, can make mistakes in their navigation, making corrections and going on, just like us. Probably, normally, we are just uninteresting out-of-the-way "fly over country" and life, to aliens who have business elsewhere and not that much time, or care, to waste while in transit on all-too-common primitive species on boondock planets. Maybe even in boondock galaxies. Maybe even, in boondock universes.