Intensive Tempo

6min break is significant. I’d call that controlled speed work. Guess it depends how you define things. We did 6 x 150 with a 250 slow walkaround (maybe 4min br) as easy speed work at times, either to replace a faster planned session or as a means of recovery.
It would also depend on the timing in the week. Often intensive tempo occurs between speed sessions rather than in place of one of them- that may be where the difficulty lies.
Does anyone know what bookends Bolt’s sessions as above? (Day before and after)