A convergent argument structure is a combination of multiple arguments, each leading to the same conclusion. Often, but not always a convergent argument structure provides a stronger support to the common conclusion of its component arguments than each of these arguments would do in isolation (see Prakken 2005, Bench-Capon and Prakken 2006). In Figure 3 you can see how two witness testimonies originate separate arguments A and B which merge into the convergent argument C , which provides a stronger support to the common conclusion of A and B .