Hannah chases Otto every single day. He doesn’t like it, and if he doesn’t run away she nips him in the bum. With them it’s a dominance thing, but right after some light chasing they come back together and snuggle, so it’s not a big deal. It was definitely the hardest thing we dealt with in their bonding, but it’s just what they do. Sometimes we joke that Otto is an abused husbun because Hannah pulls tufts of his fur out and chases him away from the food at first, but that’s just how their relationship goes. She’s the boss and wants to make sure he knows it.
Hopefully Bindi will settle down too as their relationship progresses. Hannah did, and even now she goes in phases where she won’t do it much, then will suddenly start being a pain again. Sometimes we squirt her with the spray bottle to make her knock it off, or if we’re close enough we’ll chase her away from Otto (usually by goosing her in the butt with a foot).