in somebody's hearing
within somebody's hearing

I stood, not in reach of him, but within hearing.

And through all this, none of the others within hearing had opened an eye to watch.

This was one thing he never said within Molly's hearing.

The rest of us remained in the background but within hearing.

Whenever there was no one else within hearing, he spoke.

He broke off then, looking around automatically to see if anyone was within hearing.

I made him a sign that his clerk was within hearing.

And, that being the case, why did they not realize when he was right within sight or hearing?

Of course all this conversation did not take place within Carl's hearing.

Cornelius looked around to see if anyone was within hearing.