A friend and I are spending a weekend in Vienna later this year. She is travelling from Manchester and I am travelling from London. I will be able to get a direct flight from London, but there aren't any direct flights from Manchester that fit our schedule. I have however found a Manchester-Vienna flight that goes via London with a 'long connection' (ie overnight stop). If we book this flight, does my friend have to book her luggage all the way through even if she will have to stay in London overnight? The other alternative is to book separate flights (ie one booking Man-London-Man and another booking London-Vienna-London).