MFJ with2 kids correctly receives $5,600 in economic impact payment during 2021.  Taxpayer and spouse receive Letter 6475 reporting $2,800 to each.  Can couple file separately in 2021, taxpayer claims both children and receive the$1,400 again by claiming the child that was reported to the spouse via the Letter 6475?  How are others handling this?  Looks possible, maybe unethical?

Thanks for responses - apologize if this is a duplicate question.