On this night, they were laughing and enjoying their own company so much, we let them have some time to themselves while we cleared the table.
The boys are not just entertaining themselves more now, they feed into their antics. Liam can now say "poopy". Finn immediately laughs, repeats it himself, and the laughing continues indefinitely.
Of course, they also play, share and pretend together. Now that Liam's almost two, they really can play together and enjoy being around each other. And that's fantastic.