This highly-rated recipe for Penne al'arrabiata calls for frying chilli, garlic and the basil leaves, then removing them from the pan, adding chopped tomatoes, then adding back chilli, garlic and the basil leaves.
What will I lose if I fry them separately: chilli, garlic and the basil leaves on one pan, and tomatoes on the other pan, then combine them? This will obviously be faster, but what's the downside?