Multi-link operation (MLO) in Wi-Fi 7 introduces the concept that one client device can talk to one AP over multiple radios and frequency bands at the same time. What this means is that the AP and client device can send data simultaneously over two radios at the same. These radios could be operating on either 2.4, 5, or 6 GHz band with the devices selecting which bands, or even a single frequency band, by selecting the one that works best at the time of the transmission.