A method implemented by a station (STA) in a Wireless Local Area Network (WLAN) to disregard a Network Allocation Vector (NAV) maintained by the STA. The method includes receiving a first Physical Layer Protocol Data Unit (PPDU) from an Access Point (AP), where the first PPDU elicits an immediate response from the STA, determining whether the NAV maintained by the STA was previously set using a duration indicated in a second PPDU that originated from a same Basic Service Set (BSS) as a BSS that the STA is associated with, and transmitting a third PPDU to the AP as an immediate response to the first PPDU without regard for the NAV maintained by the STA in response to a determination that the NAV maintained by the STA was previously set using the duration indicated in the second PPDU that originated from the BSS that the STA is associated with.