Hi am flying LHR-BNE in May and looking at flights on third party websites such as sky scanner and hello world. I notice i can get flights for about 2/3 the price for the example originating in Oslo on BA then changing in LHR to a CX flight to BNE. If i was to book this and never intend on being in oslo and just catching the LHR-BNE segment would this work or if i was to no show in oslo would the ticket be cancelled? Thanks for your help!