Hi, I also have two teenage boys so feel your pain and worry!
I’ve just upgraded by boys from a 5x2 (min for a pair of boars) to an L-shaped C&C with 16 sq ft of floor space (equivalent to 4x4 C&C square cage) and find they are getting on a lot better now. The larger floor space has allowed me to set up two different areas at opposite ends of the L, each with a water bottle, pellet bowl and veggies when they get them, hidey and toys.
I moved them because they were bickering quite badly (bond saved by virtue of Mousse’s massive fleecey fur coat!), the first 5 days were tough on them as they were working out the hierarchy and they stayed at opposite ends for a while. Now Mousse has asserted his authority they are back to sharing hides and food bowls, but they can still choose to go away from the other if they want. They can also have their ‘mad half hours’ without tripping over each other, which has really helped!
Remember to make sure hides and toys have two entrances/exits so one piggie can’t trap the other, and ensure they have two of everything. They may well choose to share and that’s fine too, it’s having the option to have separate things that is important! As hard as it is to watch some of the posturing please let them try and work it out themselves so long as they are not hurting each other. After Butter pushed his luck once too much, Mousse spent three days on a proper mission to make sure he knew his place. Mousse would make sure he ate first, he would move Butter out of the hides just because, and make sure he waited in line for his hay and pellets. Butter seemed very depressed during this time and I was very worried about him (gave him a few extra feeds and cuddles), but by the end of the third day he suddenly changed and seemed to accept it. Now it’s been a week and they are currently sat eating some Romaine together and taking pieces out of each others’ mouths!