Time-Division Unbalanced Carrier Sense Multiple Access (TDuCSMA) is a distributed MAC discipline compliant to the IEEE 802.11 standard that supports resource management and Quality of Service provisioning in Wi-Fi networks. This paper further highlights the compliance of TDuCSMA with IEEE 802.11 standard by suggesting the coexistence of TDuCSMA and CSMA/CA entities within the same node. The resulting distributed network functionalities are described by an analytical models which are also validated by simulations. The proposed models are meant to support network and service designs.