Last time I flew HI, the charts were pre-printed with the tracks and waypoints already on them. Not so with the NATS. Add a few mins for coloring. I recently did a two pilot IAD-LHR. I was pretty darn busy. Add to that, C1 seems like a quarter mile stroll from ops.

As mentioned, the actual preflight is a time-consuming walk if done properly. Hell, you can stare at a single MLG truck for 5 mins if you want to. Add to that trying to meet with the cabin crew. Sometimes there's a dozen of them back there. Often, they can't be met all at once. So, you walk to the forward galley, then the mid cabin, then the aft. 2-3 mins of howdy-doody per galley and pretty soon you're talking real time. If one's a looker, well you're likely to find another minute or three for her too. Plus, the triple has more gals with cats and issues than any other fleet. Seems that every other leg, one with a problem ends up in the cockpit trying to get something solved in the back. Listen, figure out exactly what the issue is and call Maint. More issues per departure.

I never checked the water n waste status on a NB airplane. Add a minute for that.

Fire up the CPDLC and reset the checklists & datalink. None are individually big deals, but extra steps none the less.

Honest answer, I've flown 4 different NB types at U. All were easy to get ready in minimal time. For ME, the triple just takes longer and I HATE to rush. I'm old, slow and slow. Time is NOT on my side.