I think he means a single workout.
There are many different workouts and so they take different amount of time to complete.
But in the first phase of intermediate strength focused program for me workout A normally took a little over an hour, Workout B normally took under 30 minutes and workout C usually took a little under an hour.
It really depends on how much you rest. To long is bad obviously but not resting enough you probably won't get the most out of your workout either.
If you're not sure how long it takes just do the workout and time it.

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