Never like that no.
Used to be, many people would do a leg workout that included compound lifts and quads. Hamstrings would be worked on a separate workout but within the same rotation. The method you are mentioning seems to suggest alternating giving the quads and hamstrings and extra body cycle to recover-whatever that cycle might be.
If you do it and see improvement, go for it though. If it works for you, who is to say it is all that wrong.