I wont mention the flight details, in case this isn't strickly by the rules.

A recent flight was delayed because the pilots were arriving late on another flight. The FAs and a non-rev captain entered the aircraft and the pax then boarded about 15mins later.

During boarding the non-rev captain was standing at the cockpit door welcoming the pax. About 30mins after everyone was seated, the flight crew arrived. The non-rev captain showed them his ID and a couple of print-outs from the little printer in in the cockpit, and then went back to sit down in coach.

We pushed back from the gate less than 10mins after the rostered flight crew entered the aircraft.

While taxiing, the captain apologized for the delay, and thanked the other UA pilot that had saved them at least 15mins in programming the computer. ^