I'd say it was longer on a driving spell, with Stagecoach. They are very fond of the domestic loophole which permits driving stints longer than 5hours 30 minutes because the layover time (time between trips) is always considered 'break' - so it's not unusual to find a driving spell longer than that, and for it to be legal. You don't many things to go wrong early in the driving spell for you to be chasing your tail for 5 hours, which itself is a source of stress.
Also worth considering is the length of time of your shift, from start to end. You might only be paid for 10 hours but find your spreadover is 13 hours as not all breaks on the shift will be paid.
You'd need to see the rota you'd be on, but whether the company will let you see is another thing. Even then, the rota won't show the content of the duties, just a duty number, start and finishing time.
It's all well and good me offering free advice, some people love working for Stagecoach and stay a very long time. Others start with them and find somewhere else to work after a while because of the culture of the place and the working conditions.
Yeah, shifts for the day can start 4-5am & finish midnight-1am,[ although you won't be working 4am though until 1am
], be wary of early starts & late finishes, which can play havoc with sleeping patterns, plus Stagecoach can operate very long routes from the depot, typically taking over 2 hours for a full journey, although i think you'll drive one full journey each way, it's not ideal if you need a toilet break halfway through.
I say this for everyone who thinks about driving buses, if you have the time, it's worth buying ticket & ride every route from the depot you plan to be based at, i know Stagecoach give route learning during training, but it's worth doing a day out, to gain more route knowledge of the routes from the depot you want to be based at operates
I know someone who ended up working for First Group about 10 years ago, his shift pattern was 4 days on & 2 off, he left at the first[no pun intended] opportunity he could as he got fed up working weekends.