What's the longest running prep time that Batman's

>>94086951
There was a comic where Freeze survived Bruce's death and like a hundred or a thousand years later or something he had his whole cave outfitted in titanium with the coding to build a program that would teach the gcpd of the day to react to any situation the real Bruce could have thought of.

>>94087267
Wasn't that just an episode of The Batman?

Batman was sent back to caveman times and left clues for Dick and false-flags for Hurt before eventually making it back to the present day. If that's not the best answer I don't know what is.