Welcome!
Annette - you may have excellent hearing but eves dropping on one conversation while maintaining another is auditory processing rather than hearing. Someone with great hearing can't necessarily do that, and someone with less stellar hearing could do it (if they could hear it).
I have auditory sensitivity, at least one of my DDs has significantly above normal hearing, mostly in the lower register, but also has CAPD. Maybe she has CAPD because she is hearing so much more low level noise than other people and it's confusing...
