Zone 4 Interval Sessions in 16 Week Training Plan

I have a question about the times listed in the 16 Week Training Plan for the Zone 4 intervals. Week one is listed as taking 1:30, week two is listed as taking 1:45 but as far as I can tell, they are the exact same workout? Beyond just getting the nice little green indicator on the calendar (every little bit of inspiration helps!), I am concerned I am missing something?

Same issue for the Skimo Max Strength workouts but the opposite direction – you slowly increase the number of sets per week but still have the same allotted time for the whole workout – again, am I missing something?

Thanks