^^ This confused the shit out of me too. That scheme is actually 2 programs! From Mesocycle 1 to Microcycle 1 you're doing the Dual Factor 5x5, and then you do the DFHT.
-> DF 5x5 volume phase
-> Deload
-> DF 3x3 intensity phase
-> Deload
-> DFHT loading
-> DFHT deload
I wrote the same question in my journal on page 2 and it goes into one big giant clusterfuck of confusion until I realized the above scheme.
Hopefully that lets you answer most of your questions.