After Maul falls down the pit, dub in echoing dialogue sourced from TCW to indicate he’s still alive down there and is going to find a way off Naboo to get some robotic spider legs.
Or better yet, take a page from Austin Powers. As Obi-Wan is talking to Qui-Gon, have Maul yell out, “Someone help me! I’m still alive, only I’m very badly sliced in half! Hello there? Anyone? Can someone call an ambulance? I’m in quite a lot of pain!”