All Dutch courses of Suitcase talen are fast paced, because they are for highly educated people.
Beginners A1A2, from zero via A1 up to A2: 15 weeks (4 months)
Modules 1, 2 and 3 of Delft Methode, from zero up to A2: 15 weeks (4 months)
Module 4 (5 weeks) takes you to a strong level A2 if you want to continue studying on level B1.
Course B1 goes from A2 to B1 (Intermediate): 4 months
Course B2 goes from B1 to B2 (Advanced) 4: months
In summer A1A2 and B1 courses are 3 months instead of 4 and your end level at the end of your course is a weak A2 or a weak B1.