by-play

A 'byplay' bearing the same name follows an elegy upon the death of an only son.

Husband and wife "took turns" from the single cup; there was gayety and byplay.

Miss Gerald noticed this sentimental little byplay, but what Bob did was, of course, of no moment to her.

It was pardonable in him not to have suspected earlier that there was some byplay of talk to whose meaning he was not privy.