In modular you do everything in building blocks.
PPL first, min 5-6 weeks, realistically 3 months
Then ATPL ground school - min 6 months
Then hour building 1-6 months
Then CPL - 1-2 months
Then ME&IR 1.5-2 months
so could easily come to two years
With Integrated you do everything in one go. So on Monday you might do some flying, Tuesday some ground school, Wednesday some simulator and so on (obviously a simplified model) and you don't have anything until you pass the final test and have completed everything.