Incorrect administration of free throw (inadvertent horn)

[MattReferee]

Let’s remember that we as official control what happens on the floor and our whistle not a inadvertent horn play on !!
Haven’t you been in the situation after a made free-throw”last FT”or made baskets and you have your five second count and you have a substitution at the table and table hits horn 🤭
Do you give the player throwing ball in a few more second because of HORN? Or isn’t it PLAY on ?