This brief interview with Remcom's engineers took place at the 2025 International Microwave Symposium. Justin Newton and Tarun Chawla discuss the evolution of a software platform that unites Remcom's FDTD code with its ray-tracing tools to analyze complex near-field in large-scale propagation environments. This integration enables electromagnetic analysis of connectivity between multiple body-worn devices (on-body propagation) as well as other applications like in-cabin sensing and child presence detection in a vehicle.