Support for simultaneous BLE+BT2.1 mode

Does the USB-BT4LE support simultaneous BT 4.0 and BT 2.1 connections? We need it in a project where it’s supposed to talk both to a smartphone over BT 2.1 and to a sensor over BLE. It would be a slave on the BT 2.1 network and a master on the BLE side. Is this supported?