Thread:Firestorm808/@comment-25295648-20190904104641/@comment-31883133-20190907025010

He is misinterpreting Superman, the missiles, and the heartbeat. Before Superman left Lois in the 1st issue in Final Crisis: Superman Beyond, all time has stopped.

"I invented this chrono paralyzer to freeze time here in universe designation 0. As it thaws, her heart will beat once only without your aid then stop. Fortunately, time is different beyond the walls of this world. I can ensure your return long before then."

It is only because of that, Superman and the others saved Lois's life between her heartbeats relative to the time stop.