Chocomint discourse aside (it's the best and definitely not toothpaste) this is totally one of those chapters that shows just how far they've come without the entire chapter having to make it the "point". This chapter is about ice cream, sure - but we get more or less unabashed spoon sharing/indirect kissing (Hino even points pour how comfortable Koguma is to that point that she doesn't notice it) and cheek licking that just bear-ly has a compliant given.
I wonder when the next major "dramatic"/romantic arc will be. At this point, the exam arc has been done for a while.