I did Progression 1 at the beginning of this week, and whilst I managed to get to the 40 minute mark, it was very challenging - surprised to be within a few % of my ramp test result from the beginning of the previous block but not reading much into it as different metrics describing different things.
The one takeaway I would share is the impact on recovery and subsequent training. The test wiped me out completely. 4 days later and I felt just about good enough to do Palisade. I know it’s n=1 but just might be worth considering as part of planning your training.