Dvar Chassidus On the Parshah

The פסוק says that the מלכים ate the food which אברהם gave them and רש"י says that “they pretended to eat.” it seems that אברהם didn’t do the מצוה of הנכת אורכים because they didn’t actually eat it and אברהם interrupted his “conversation” with ‘ה for no reason and how can we learn about הנכת אורכים and it is greater than talking to ‘ה from a story with no real guests? Generally חסד the focus is mainly on the results with the exception of הנכת אורכים which is mainly about the good shown by the host which means that אברהם did the מצוה in the best way without real guests