Can we change the chirps so the delayed exit doesn’t sound exactly like the delayed entry? For example, maybe an exit delay chirp could be a beeping souls vs. the entry delay could be a a long continuous sound. It’s constantly confusing when it’s the same exact sound for both exit and entry (especially when we miss the announcement over the chirps) 
Why is it confusing?
Don’t you know if you are setting your alarm as you are leaving or trying to turn it off when you arrive? Why would different chirps even matter?