Superman continues travelling forward in time in the second part of the story, by Bates, Swan and Roussos, in Action 386 (March 1970).
Superman time jumps forward, and winds up in an era where all super-powers have been outlawed, following a huge war of super-powered people.
Superman winds up exiled to a planet where all the other super-people have been sent. King of the retirement home.
He does get everyone to work together, and show the world that old super-heroes have something to offer. But then he just time jumps again, as the Time Trapper watches, enjoying it all.
Uli Algor, the woman who impersonated Shadow Lass, returns in this story by Bridwell, Mortimer and Abel. It begins on Takron-Galtos, the prison planet, which I believe is the first time that entire name and description are used.
Despite the scary name, they are using feel good gem therapy, it seems, to rehabilitate criminals. It does work on some, but Uli had conditioned herself to resist it.
Returning to Earth,she sets out to avenge her defeat against the Legion. She runs into two couples in the park, challenges, and defeats Lightning Lad and Saturn Girl, Cosmic Boy and Night Girl, with a device that enables her to turn the heroes powers against them.
That might have been enough for some, but not for Uli. She presses her luck, and challenges another group of Legionnaires. Karate Kid, Brainiac 5, Ultra Boy and Phantom Girl accept her challenge, and head out to Talus, an asteroid of junked space ships. This is the only appearance of Talus until it becomes the headquarters of the Legion, in the early 90s.
Uli uses her weapon successfully against three of the team, but she waits as Ultra Boy approaches her, to see which of his repertoire of one-at-a-time powers he will use. And Ultra Boy just runs up and decks her, using nothing but his own strength.
Uli heads back to Takron-Galtos. We never hear from her again.