We need some clarification here on what constitutes "internally routed". I prefer cables and hoses (A) entering the frame via one or more openings in its down tube, but not (B) routed through the stem, headset spacers, or head tube. This preference led me to choose a Cannondale Synapse instead of several other endurance bikes.

If I understand correctly, A is commonly referred to as "internally routed", whereas (B) is "fully internally routed" or "integrated". If these terms are correct, the Aeroad has internally routed cables.