Parallel vs sequential agents — CCA-F Exam Prep

Three dishes. One chef took 45 minutes. Three chefs took 15. Then an order came in for steak with a pan sauce made from the drippings.
Salad, steak, dessert -- three independent dishes. Three chefs, 15 minutes. Five-star review. But the pan sauce DEPENDS on the steak finishing first. Three chefs can't help -- the sauce chef has to wait for the drippings.