You can be at work as long as you like there is no minimum rest requirements. Being at work and doing work are two different things.
You could do a combination of driving and working which totals 8 hours of duty. You could then sit doing nothing for 6 hours on a break. You could then do a further 3 hours of working / duty. That’s a total of 17 hours at work but perfectly legal as your duty / working time was 11 hours.
Your 24 hour clock is not reset by having a daily rest like it is under EU regs. So if you start work on a Monday at 6 am and you do 10 hours of driving that day you cannot legal drive again until 6 am on Tuesday. I doubt you’ll be doing 10 hour drives on a vac anyway.