GT ViPre into Neve 1073 OPX Question

I use a GT Vipre for my vocals. I’m running it into a Neve 1073 OPX interface out to my DAW. When gain staging, I raise the ViPRE’s gain until it’s reading an average around -18dbfs in the DAW with peaks around -8db. If I’m noticing it needs a little tweak, I’m simply raising the gain on the Neve interface up to + 1 or + 2 on the gain display.

The question I have here is, by doing things this way, am I essentially getting a unity gain or close to it on the Neve preamp? If the Neve gain display reads 0, am I bypassing its preamp and only hearing the ViPre or am I still hearing the Neve too since it’s running through its preamp?

If I’m touching up the gain by a click or two on the Neve, am I doing things wrong in a way that would lead to a problem?