a dialect for two

"The footage depicts two women.

They eat together. If it's dessert, they will share the spoon back and forth. One eats, the other waits politely for their turn. When they're down to the last mouthful, the one whose turn it is will halve it and pass it back.

They have mastered handholding in all its forms, but their favourites are to intertwine fingers, and to clasp their little fingers together.

Most recently, they began to finish each other's sentences.