When eating a meal and drinking coffee it's recommended to wait an hour after eating your meal to drink your coffee.
The reason that it's recommended to drink the coffee an hour after a meal is because when you drink coffee soon after the meal or during eating of the meal then your body is less able to absorb the iron from the food.
But other than that it's not bad to drink coffee along with your meal or soon after the meal.
If you don't have an iron deficiency then you can drink your coffee anytime you want to drink the coffee.
If you do have an iron deficiency then it's best to wait an hour after you have your meal to drink your coffee so that your body can absorb the iron content from the food.
But other than that have your coffee anytime you want.
I drink coffee along with my meal and it's never been an issue and I'm healthy.