You son applied RD. That is what they should say for both. Saying spring 2023 means that someone might also being looked at for Spring if 2023. More interesting for you is which of the two is it defaulting to. When you apply to both the drop down had Emory first and then Oxford. If Oxford is the one the shows up first it is more likely that if your child is getting in it would be to Oxford or if it says Oxford 2023 As a spring admit. Seeing both that is simply what the portal looks like. It means nothing.