As for Neal running…might not be her voice that tipped him…like Gold tells Henry later…his son is adept at running…as much as Emma knows how to spot someone who is hiding…Neal probably knows how to recognize when he’s being tracked.
That is true, I’m sure the guy has been permanently on edge for some time. But I have to think that it was the sound of her voice that made him run. If he knows the curse is broken, he’s probably been a bit more jumpy than usual, and then THAT VOICE, the voice of the girl he loved, and left, that voice that he hasn’t heard in 10 years, but is still unmistakeable, it suddenly comes over the intercom of his apartment. Any other voice, he probably would have stayed, hid, pretended he wasn’t home, prepared to take down anyone who came in his door or his window. But THAT VOICE…all he could do was run from it.