QFinsider, I think you are misreading the CA. TOD limit with 3 pilots is 14 hours scheduled, extendable (by each individual pilot) to 16 hours in the event of delays etc. Duty time starts at sign on. This means for LHR-BKK in summer, given a 12:00 (say) flight plan, if there is a 10 minute slot time delay any pilot can refuse to go because taxi times each end will certainly take the TOD over 14:00.