I don’t know, maybe it seems cryptic, but that’s also kind of the point.
Simply: It is true that we notice certain aspects about other people because those aspects are important to us.
But then there are occasions when those aspects are so apparent, not noticing requires some deliberate effort.
To wit, if at some point one makes a deliberate, sustained, focused, and otherwise sufficient attempt to disrupt another, the other will eventually notice.
The only question remaining is why, or, perhaps more directly expressed: What do you require of me at this time?
Because nothing else, in that moment, exists anymore. Not what I was about, going to be about, or need to be about; only this. You now have my attention, what do you require?