I saw a post few days ago of tata neu. Just to give summary if in past someone own Tata neu card and closed it, they won't be able to apply again because in Tata neu website card is still showing and new card offer be never be shown on the same account.
Hence, i was thinking the same that just incase if in future i want to apply for RBL play credit card i won't be able to apply it because in app it's still showing my previous own card.