As far as your rabbit is concerned, he seems fine with your kitten. I don't see any signs of irritation or aggression, but that's not saying it couldn't change. Rabbits don't play the same as cats, so your rabbit could get upset at what might be just your kitten playing.
The one problem I see is the play biting and pawing. Cat bites and scratches are loaded with bacteria and could prove fatal to your rabbit if your kitten were to draw blood, even in play. That's not saying they can't play together, but you need to be aware that it does pose a potential danger to your rabbit. If you do allow them to be together at all, you just will need to monitor them closely and not allow the biting and mauling play from your kitten. Hiding, chasing, snuggling, is ok, just no biting or pawing. Maybe redirect your kitten to an appropriate toy for that type of behavior.
