Generations Forged #1

Dispersed through time by the villain Dominus, our ragtag team of generational heroes—featuring 1939 Batman, Kamandi, Superboy, Steel, Starfire, Sinestro, Booster Gold, and Dr. Light—must find a way to restore the timeline…and what they ultimately discover is something far, far greater. You’ll have to read it to believe it as time dies…and generations rise! 

Story continued from Generations: Shattered #1.
The comic introduces the concept of "Linearverse" where non-powered heroes like Batman age far slowly than normal and went through all stories that happened in past comics, at least in some form