As always, when we introduced Grizzly to the cage, we had to keep him quarantined from Bean for a couple of weeks, until we could be sure he didn't have any contagious conditions from the pet store. But the pigs were on either side of the cage wall right next to each other.
They did look over at each other, but only when the other pig wasn't looking. For some reason they were trying to be nonchalant about it.