Yes, until 14 months!
If they are character compatible then they will get through it unscathed, if they arent compatible then it will become obvious and they will need to be separated. What you need to do is be very confident in boar behaviour so you can know what you are seeing and when it is still within normal levels. Don’t be tempted to step in if it is normal dominance.
A large cage is key with boars. They need more room than sows to have enough territory and to get away from each other. Don’t have any enclosed hideys - ensure everything has two exits so nobody can get cornered. Keep them occupied by scatter feeding, plenty of people do use food bowls and there is nothing wrong with that, but i found scatter feeding really helped when my two were teens - they spent ages rummaging through huge piles of hay looking for their hidden portion of pellets and veg. It kept their natural foraging behaviour alive, gave them something to do and meant no piggy can hog a food bowl!