How D-Day could have failed and what came next

Could D-Day have failed, and what would the Allies have done next?

Yes. The response expects a second attempt and identifies weather during the landing as one way the first could fail.

The answer is that D-Day could have failed and the Allies would then have tried again. Weather is the concrete danger discussed. The panel describes the risk of launching just before a major Channel storm, which could prevent troops reaching shore during the landing. The exchange gives no detailed plan or timetable for a second invasion.