The advice that I received when I started wargaming was that it is okay to put spirit based paints or varnish on acrylics, and vica versa, but you need to allow at least 24 hours for the previous paint to dry. (30 hours is more than 24 hours but 22 hours isn’t.) You don’t need to wait that long putting water-based paint on water-based paint, or spirit-based paint on spirit-based paint. The person giving that advice painted figures for a living at that time, and I believe them. The only time that I tried to speed things up, the figures didn’t work out as well as they should have.