It's common in some synagogues I go to to have a large kiddush with mezonot after Musaf, and then a large meal in the early afternoon. My questions are:
First, does this fulfill the mitzvah of three seudot?
If it doesn't, which seems to be the general opinion in this question: 3 meals on shabbat?, what do the sources say one should do? Kiddush (or not) at the early afternoon meal, then have a third meal after the large meal (hard during the winter)? Or the only way to fix things to bring bread to the kiddush (or having a Kezayit after getting home)?