Wiktionary
two birds with one stone
n. (context idiomatic English) any two things that were performed or completed at the same time by one action.
Usage examples of "two birds with one stone".
Deciding to kill two birds with one stone, she began to root through the cupboards.
And they could kill two birds with one stone, in a way, if they deliberately failed to respond to our drones.
It will be a good opportunity to kill two birds with one stone, see Bozo fight and pay her a visit the next morning.
And if doing that creates a situation in which a potential threat to the State eliminates itself, or is eliminated by enemy action, then we've just killed two birds with one stone.