Chesty's point is absolutely valid John. It's down to the Captain to set the pace, as he is aware of every second that is passing closer to STD. If time is tight, he/she may re-arrange tasks, usually preceded by the classic words "non-standard, but can you do me a favour and do xyz please?"
Conversely, when time is plentiful, I have several well-meaning First Officers who, despite my persistent gentle advice, continue to rush the set up and turn-round tasks of the operation. Like all airlines, our PF / PNF responsibilites are clearly published in both company and manufacturer's manuals. However, after I return to the flight deck, I am regularly met with "I've done everything."
I then sit down to perform my assigned tasks (second time I've glanced at my watch since the walk round began and we still have for example 45 minutes before scheduled departure time) and usually have cause to raise the following questions......
For some reason the route seems to have been executed in the FMC.
"Yes I did that because I wanted to put the winds in."
I stare with confusion at the overhead panel set-up. Was it you or the engineer that put the hydraulic pumps, windshield heat on etc.??
"Yes don't worry I've done all that."
OK well I'll just see if I can get hold of the dispatcher.
"He's been out already."
So you let him go?
"Yes he's just lining the passengers up just now."
I wish he would run the loadsheet first.
"No, I've got that and loaded it in the FMC."
I see. Everything must be ready then

Has the fuel bowser unplugged yet?
"Yes he's gone."
Bugger. He didn't pass me the fuel receipt to sign.
"It's ok I've put it in the voyage envelope......Ground, QuickGuy 123 request clearance to Timbuctoo."
Double bugger, that must be the clearance you're getting, I'd better put down the tech log and coffee and listen in since you're doing this covertly over your own headset.
The list goes on.........
Now see hear FO QuickGuy, it's great that you have the ability to take on the responsibility of running the show here, but at least wait until I've died first and Crewing have called out the standby Captain, or failing that, allow me to sort out my own safety checks/FMC set-up /document signing like I'm expected to, otherwise I lose my train of thought and start wondering what I've missed or what I'm supposed to do next.
"Ha ha, that must be your senility setting in."
Somebody please shoot me.


