Does a Muslim's informing those for whom he made an unseen supplication invalidate the angel's supplication for him, "And likewise for you"?

A Muslim's supplication for his brother in secret (behind his back) is one of the reasons for the supplication's acceptance. The angel assigned to it says: "Amen, and to you be the same." It is stipulated that the supplication be bidhahri al-ghayb (in secret); that is, in the absence of the person being supplicated for, or in such a way that he does not hear it if he is present. This is for the sincerity of the supplication and to distance oneself from ostentation, and it is a condition for receiving the reward associated with this supplication. If a Muslim supplicates for his brother with sincere intention, and then a legitimate, preponderant interest arises that necessitates informing his brother of the supplication, this does not diminish his sincerity nor deprive him of the reward of the angel's supplication, unlike if his intention from the beginning was to inform the person being supplicated for.