Schematic illustration of a possible 2+3 dynamical interaction leading to the present configuration of S1082. Left: Initial configuration, consisting of a wide quadruple in which the close pair Ba–Bb (1.4 and 0.35 M_⊙; a_inner ∼ 3 AU) orbits a 1.0 M_⊙ star at a_outer ∼ 390 AU. A separate binary with initial separation A1 (1.3 and 0.36 M_⊙) approaches the system. This scenario assumes that prior MT within the incoming binary produced the BS before the encounter. Center: During the encounter, an exchange interaction occurs in which the 1.0 M_⊙ star binds with the 1.3 M_⊙ star from the incoming binary. Right: Final outcome, in which the interaction forms a close Aa–Ab binary (1.3 and 1.0 M_⊙) and leaves the original Ba–Bb pair intact. The resulting two binaries remain gravitationally bound on a very wide orbit. Orbits are not to scale; the schematic is intended only to illustrate the dynamical exchange process discussed in Section 4.2.1.