Don't quote me on it, but I don't think that CO 739s are ETOPS certified, which would mean that couldn't be used for transatlantic. I know CO uses 757s to thinner markets out of EWR, like LIS, BRS and GLA, but no 739s. Maybe they're used to South America, but I don't think they'd need to be ETOPS for that (someone correct if that is wrong). Unfortunately, Continental's web site doesn't offer a .pdf version of their timetable to corroborate his claims.