In fact, this isn't really about language learning, but it's got under my skin, and if I don't get an answer to it I'll never be able to learn using Rocket Chinese.
Lin's English-speaking partner (and I hope it isn't too rude to say that his speech in Chinese really isn't up to scratch) claims to be English but to have lived in the USA for a long time. However, there is this very clear, if light, Antipodean twang to his English. If I can't trust my ears for English, what hope is there for other languages? (That's a joke, by the way, since I speak Scottish Gaelic and German fluently and several other European languages to some extent too.) Please put me out of my misery, and own up to smuggling an Australian on to the course!