Well, right now I have LHR-FRA-(US)-PHL (3949 miles)-BGR and what I want is LHR-FRA-(LH)-BOS -(US)-PHL (3669 miles + 280 miles = 3949 miles) -BGR, so that my GF and I can at least travel the transatlantic flight together, since I'll be on a UA ticket (UA codeshares the LH flight to BOS but not the US flight FRA-PHL). And I don't really want to fly US over the pond, anyway...