A single communication stack may be utilized to setup a data transmission session between wireless devices. A primary physical layer corresponding to the single communication stack may be utilized by the wireless devices to perform discovery, pairing, and security setup operations when setting the data transmission session. A secondary physical layer may be utilized to perform high speed data transmission. The secondary physical layer may be integrated or managed via the single communication stack corresponding to the primary physical layer, and applications running on top of the single communication stack may utilize the secondary physical layer transparently. A portion of the transmitted data may be multiplexed onto other secondary physical layers that may be available to the wireless devices. Alternatively, transmission of data may comprise switching among available secondary physical layers. The primary physical layer may be utilized during data transmission to continually monitor and/or manage the data transmission.