i thought that but what was trailing it? there were two lights, one behind the other. who knows, could have been mile apart but to my eye, they were traveling together. is there anything traveling in tandem with the ISS?
Not sure if it’s related but the gov just launched 20 or so says in a falcon heavy.
When a supply ship is approaching or departing the ISS, it looks exactly like you describe.
https://spotthestation.nasa.gov/sightings/