I provide two separate bowls for everything. Two water bowls, two pellet bowls and two salad bowls. George can be pushier than Gracie and this way, they both can eat without competition.
When I first adopted Hazel and Maude, I didn’t know they could be competitive. They came in one small hutch with one bowl. Maude is bigger than Hazel, even today. I separated them at six months due to aggression and an injury at puberty (adopted around 5 months.) I was new to rabbits and they were rescues.
So, watch their behavior and when in doubt, create less competition by providing spacious conditions with two feeding areas. If they are bonded and spayed/neutered, they can live very happily together and be incredibly sweet.
George and Gracie are large 12 pound rabbits. They seemed frenzied when they first arrived but once they were placed into a 12 by 3 by 4 enclosure, (3 combined XL dog crates, the dominant mounting behaviors stopped and they became very sweet, calm and gentle with each other.
I hope this helps.