That isn't a bad punctuation chestnut but a bad vocabulary chestnut: it should read half an hour later. And it is nothing to lose your head about. I had actually forgotten about it, since it is that long sinc eI saw it. I shall probably forgive you for reminding me of it eventually
Campbell. if you are talking about my punctuation, I thought you knew me better than that ignoring punctuation and capitalization is my trademark. I only care about spelling