While having them 12 months apart wasn't the plan, it's what it is. What I'm finding is that my boys aren't close. They love each other and are excited to see one another when they've been apart, but often when it comes to empathy for one another, they're a bit....lacking. They have to be coached to hug one another and say "sorry" for hurts or slights.
"Siblings shape you in ways that are less deliberate than parents, which means their influence is less discussed, though just as important."