Also, I find it impossible that any 756 pilot rotation is built with a TCON followed by another leg on the same duty day (BOS-SFO-LAS), unless that rotation breaks regularly. Inflight I can see. Are these pilot rotations or inflight rotations you’re using as examples?
This is the root cause of our disconnect the lines I posted are not fictional they are actual lines that pilots are flying each and every day. Perhaps years ago a pilot would fly a TCON and be done for the day that isn't the case today. Pilots today are flying TCONS BOS-SFO or IAD-SFO then turning and working a short hop flight like SFO-LAS, SFO-LAX, There are pilots flying SFO-ORD-MCO all in one day and when you look at some of these lines it becomes extremely clear how airlines run into trouble during inclement weather, why crews time out and why cancellations are so numerous. But yes the days of pilots only doing a singular TCON flight and being done for the day is over and I would imagine it is the same at AA and DL.
Which is part of the reason I stated in my opinion any international line is better than 90% of domestic lines. Domestically pilots out of SFO are up down, up down for probably 16-18 days in a month. An international pilot out of SFO as I stated can do 3-4 roundtrips and be done for the month, pilots who can do it in 3 roundtrip are away from home base for 12 days (barring any delays or cancelations). If I was a pilot and had the seniority even if it meant being on reserve I most certainly would bid for either the 77W or 787. You don't need to agree with my opinion on the 90% but those are actual pilot lines that are being flown today by UA pilots.