E-filing + Gift Form 709

Turbo Tax doesn't include a digital Form 709 which I need to file this year, 2023.

If I E-File my Turbo taxes - can I snail mail in my Gift Tax Form 709 or will that create confusion?
 - or - 
Since I must mail in the gift tax form 709 thru USPS, should I also snail mail the tax form. (ie do NOT e-file the turbo taxes?)