A method, comprising: communicating, by a processor of a first apparatus, with a second apparatus via a first link in a first frequency band and via a second link in a second frequency band different than the first frequency band by performing operations comprising: performing an independent enhanced distributed channel access, in the following also referred to as EDCA, on each of the first link and the second link; obtaining a transmit opportunity, in the following also referred to as TXOP,; and synchronizing either or both of a starting time and an ending time of a transmission and a reception on the first link and the second link to avoid causing an in-device coexistence, in the following also referred to as IDC, interference due to the transmission and the reception occurring simultaneously. characterized in that the synchronizing of either or both of the starting time and the ending time of the transmission and the reception on the first link and the second link comprises: identifying a value in a legacy signal, in the following also referred to as L-SIG, Length A-Control field carried in a soliciting frame; determining a transmission duration of a response frame to be transmitted in response to the soliciting frame based on the identified value; and transmitting the response frame for the transmission duration on the first link and the second link. communicating, by a processor of a first apparatus, with a second apparatus via a first link in a first frequency band and via a second link in a second frequency band different than the first frequency band by performing operations comprising: performing an independent enhanced distributed channel access, in the following also referred to as EDCA, on each of the first link and the second link; obtaining a transmit opportunity, in the following also referred to as TXOP,; and synchronizing either or both of a starting time and an ending time of a transmission and a reception on the first link and the second link to avoid causing an in-device coexistence, in the following also referred to as IDC, interference due to the transmission and the reception occurring simultaneously. performing an independent enhanced distributed channel access, in the following also referred to as EDCA, on each of the first link and the second link; obtaining a transmit opportunity, in the following also referred to as TXOP,; and synchronizing either or both of a starting time and an ending time of a transmission and a reception on the first link and the second link to avoid causing an in-device coexistence, in the following also referred to as IDC, interference due to the transmission and the reception occurring simultaneously. characterized in that the synchronizing of either or both of the starting time and the ending time of the transmission and the reception on the first link and the second link comprises: identifying a value in a legacy signal, in the following also referred to as L-SIG, Length A-Control field carried in a soliciting frame; determining a transmission duration of a response frame to be transmitted in response to the soliciting frame based on the identified value; and transmitting the response frame for the transmission duration on the first link and the second link. identifying a value in a legacy signal, in the following also referred to as L-SIG, Length A-Control field carried in a soliciting frame; determining a transmission duration of a response frame to be transmitted in response to the soliciting frame based on the identified value; and transmitting the response frame for the transmission duration on the first link and the second link.