The external RTL simulation is supported for XSIM and all other third party simulators. You can find the respective simulator scripts generated inside the export_sim directory as per the following directory structure.
export_sim/<simulator_name>/<top_module_name>.sh
Once you finish to analyze the traffic from PL to AIE and AIE to PL, the AIE simulator and RTL simulation should be manually terminated. No Pass/Fail check is done.