I live in an average residential area, and in the still of the night we can hear yelling from an awful long way away. So, yes I think the neighbours could well have heard something.
Sadly at my house, in the still of the night, we also have to put up with various idiots {few different houses} who think it's good to slam doors, break windows and throw eachother out of their houses all through the night. With that comes the necesary abusive language and threats. But no need to worry, they all make up again the next day... well they have to, otherwise they wouldn't be able to throw eachother out the next night. ho hum.
I'll add to that, that we don't even live in a bad area. lol