Except no combiner box. The panels will literally connect to each other directly. Just insert one male/female MC4 from each panel and you are done. The MC4 cable then snaps on direct to the two remaining connectors. If the panels are mounted too far apart you just get the extension cable needed and snap them together. Low tech, plug and play.
This exactly how a home system is wired except they have 12 or more panels all snapped together and a single pair of wires coming down to the grid tie inverter. These are often close to 600 volts.