as far i know it should be in phase same as the rear. i have only seen hilux's with them out of phase. i'd say yours have been removed at some stage for new uni joints and they have pulled it appart to service the slip joint and placed back out of phase.
If both drivshafts are in "phase" then it is a fluke.
Think about it. If you were to drive in 4WD all the time then it might be possible.
In reality, you drive in 2WD most of the time so the rear driveshaft will will be spinning without the front.
Nothing to do with front V's rear shafts.
The yokes when aligned as in the attachment are in phase. Any out of phase of the yokes will cause small in/out movement of the shaft as the universals rotate. This is a 2-piece shaft but you get the idea.
However a lot of manufacturers do run out of phase shafts to try to reduce inherent propshaft vibration due to design faults.
The most common fault is non-parallel drive flanges and I'd guess this could be an issue with the old fashioned beam axle on Patrols.
Commodores (from VN on with live axle) ran out of phase prop shaft but they still always vibrate when taking off. You can play with the phase angle but all you'll do is move that vibration to a different RPM.
Once you go to an independent axle, no more problems.