Question about Clock Enable port on D flip flop

Okay. get it.

But i still tend for : even control signals changed witch clock with the same frequency as data clock. does phase shift possible between these two clocks to improve hold time or it doesn't need??? for example when you try use control signal with 180 degree phase shift <- you might get setup violation.

I ask cause ICG (iternal clock gate) is generated per LAB at this labclkena signal. and I feel weak analysis for the topic.

Frequency Contol signal clock = Frequency data signal, Control signal clock has phase shift to data signal clock.