Virtual Supply Truck vs Explicit Supply(FWWC)

[BigDuke66]

What also seems worth to be considered is how resupply of Low Ammo units works.
Playing with Explicit supply it's enough to place a supply unit in range of the Low Ammo unit to resupply that unit.
Without Explicit Supply a test has to be made that is based on the distance between the unit and the (usually a Brigade) HQ, according to the formula the chances can be as low as 50%(at maximum command range of the HQ) and as high as 100%(in the same hex as HQ unit).
So the guaranteed resupply with supply units is nice as it allows to set a schwerpunkt where the supply flows to keep an operation going.

Just to clarify, even when using Explicit Supply rule there is still the second test made like it is described on page 71 of the manual?