Yep, this is how it is in Mirage or in Inferno in CSGO. Lmao you tell your teammates nobody's at B then pretty soon the flashbangs start coming and the smoke lineups are set. This happens to me in Mirage when I am on B Short trying to listen to footsteps in Apps and when I don't hear anything I tell my teammates they might be on A Site then I'll hear the footsteps and utilities in just a second later.