How old is Naboo? If he is out of his teenage phase it should not be a problem, i took my eldest boar dating after his friend died, he's just turned two and at the time we paired him up with a 6 week old boar who is now nearly 15 weeks and so far so good.
The idea is that a younger boar will not be a threat to the elder one as he is 'established' if you like and there isn't much fighting to be top dog. When the younger one hits the 3 month mark onwards until they're about a year they'll be displays of dominance from the younger one, lots of rumbling, probably mounting etc. My eldest shrugs this off or ignores it lol. It is highly advisable to boar date if you can find a rescue near you when you have transport or get someone else to take you as that way your boy can spend some time with a younger one and the person at the rescue will know what to look for and be able to tell if they're suitable together. Occaisonally boars do fall out when the younger one grows up, if he just happens to have a naturally boisterous temperment (something you just have to risk, you can never guess how they'll turn out lol) but in my experience it has been rare. Just be aware boars do squabble but unless they are actually drawing blood you have to let them work it out themselves.
Hope that helps!
PS- where are you?
