  We consider four-point correlation functions of protected single-trace scalar
operators in planar N = 4 supersymmetric Yang-Mills (SYM). We conjecture that
all loop corrections derive from an integrand which enjoys a ten-dimensional
symmetry. This symmetry combines spacetime and R-charge transformations. By
considering a 10D light-like limit, we extend the correlator/amplitude duality
by equating large R-charge octagons with Coulomb branch scattering amplitudes.
Using results from integrability, this predicts new finite amplitudes as well
as some Feynman integrals.
