Need some help here. I've just bought a 3-pack WIFI 7 TP-Link Deco BE65.

I have turned on 6Ghz band and MLO (Multi-link operation). For mesh, 1 main unit to ONT, 1 unit is using wired for backhaul and the last unit is wireless. 

I heard that once MLO is turned on, backhaul will automatically be disabled. I also read conflicting Internet messages that regardless MLO is on or not, the 6Ghz will still be used for backhaul. 

Not sure if my TP-Link Deco BE65 supports dedicated backhaul (enabling MLO will disable wireless backhaul) or flexible backhaul?  If my router has limited channel availability, enabling MLO could prioritize MLO over wireless backhaul, affecting backhaul bandwidth.

Seeking your advise whether to turn MLO on or off if I need my last (3rd) unit for wireless backhaul. 

Thank you very much in advance.