For those wanting the recirculating to stay on indefinitely (until you turn it off or vehicle shut off), try the change below. This is for the 21+ F-150s but it may work for the 2020+ Explorers.
*As always; make sure to backup the HVAC module, just in case—before writing any changes. Report back if this works for you, then I can have it added to the spreadsheet.
Disables Enhanced Windshield Anti Fogging Strategy:
HVAC -> 733-01-07 -> xxxx x8xx xx (If OEM is A)