"I know, I just...I should have called earlier but I didn't know if your phone was tapped and I've been trying to stay safe and..." He ran a hand down his face as it all came out in a rush. It was a relief in a way to be talking to her again. "I missed your voice."
There's the sound of a car passing now and again, but that's the only clue Betty is going to get, Bruce doesn't what anyone to come after her to find out where he is.