This scene does not reveal much new information, but Poirot brings these details up again, since events in a mystery novel often take on difference significance after a big revelation. In this case, it’s a little strange that Jacqueline and Simon were planning a honeymoon in Egypt, but that Simon ended up taking Linnet instead. This move could be another sign of how Linnet jealously wants to take everything from Jacqueline, even her honeymoon location, or it could mean something more.