Originally Posted by
Cyke
With Pietro, we meant in that metaphorical sense when it comes to grief, not literally, like their spirits smiling down upon them because our passed ones watch over us. It's not uncommon in fiction (or the MCU, for that matter -- they already implied that with Frigga's inevitable death in this movie).
But Wanda also said her line in the definitive, not hypothetically like Clint. So assuming she meant Tony for the sake of argument, she would mean Natasha knowing as much as Tony in the definite -- by Wanda removing the hypothetical nature of the response, that means there's sureness. If she said, "I hope they both know" or some other qualifier like that, then yeah, it could be narrowed down to eliminate Tony.