Walter, yes, it is all digital, however, the latency of the actual audio that is at the outputs is ever-so-slightly late compared to what's going on under the hood inside the mixer.
There is a digital converter that converts analog input to a digital signal and this is when the processor can begin to process the digital signal for our gate settings.
So, when we hear the kick,,,, it is gated, but not missing any zeros and ones. Proof is listening to any analog gate verses a gate in a digital console or computer DAW software, the "look ahead" ability is what is advantageous to things like a gate.