Your information has been great to review. But I'm in the same boat.
Question:
Are you saying that a 2021 F-150 Platinum with the 3.5 Liter EcoBoost Twin Turbo V6 doesn't have enough power to pull a 2020 2400RL?
It's rated to tow with a full trailer tow package (Max Tow) at 14,000 lbs.
If you can what would be your main concerns about how the numbers for the axles, tow hitch (Hensley hitch), tongue weight, etc.
I look forward to hearing from you and appreciate any help you can give.
Have a great day and thanks again!