@Crysta1
Hi, Thanks for the update.
I checked with the engineer and he confirmed that we doesn't need to enable separate 6GHz network to utilize it capability on MLO network.
I also tested "Network Optimization," and it did not detect the wireless bands used by the MLO network. Therefore, I believe this feature does not have an effect on the MLO network.
For the Intel BE200, It doesn't seem to support Multi-Link Operation (MLO) yet on the official build.
https://community.intel.com/t5/Wireless/Is-the-BE200-yet-capable-of-MLO/m-p/1578292?profile.language=en
So It would connect to either 5GHz or 6GHz to Deco. The preferred wireless band might depend on the Intel PC itself.
In this case, I think we could try to disable MLO network now, and enable the separate 6GHz network instead to get a better transfer rate.
Thank you very much and best regards.