Complex sentence: Back on the base, O'Neill, Carter, and Daniel are at breakfast, with O'Neill enjoying oatmeal as a nice change from the Fruit Loops he has been eating.
Split into simpler sentences: Back on the base, O'Neill, Carter, and Daniel are at breakfast. O'Neill comments on how the oatmeal he is enjoying is a nice change of pace from the Fruit Loops he has been eating.