Yup, UA870 on Tuesday takes the aircraft from UA1758 (10am departure from LAX on Monday after a ferry flight from SFO) making apparently an immediate turn back to SFO at 9pm-ish. The UA840 on Tuesday is scheduled as an on-time departure, taking the UA863 plane doing the MEL run. Happy to see no cancellations downstream of Sunday's UA839.. They've got this game down pat, so much practice...