We had advance notice of impending missiles via technological means, per the early-warning system, but what I’m asking is whether there were communications between the two countries in the interest of averting casualties. If, as it appears, the point of the strike was for Iran to save face without escalating things further by killing Americans, then it’d be important for the Iranian military to do what it could in advance to prevent such killings. Solution: Tip off the target.
Did they tip us off?
It’s clear that they did so indirectly, at least: