Even before that. I remember back in 1988. Biden when he first ran, stole the speech of a UK politican (Neil Kinnock). It made big headlines here in the UK.
He cannot seem to read a prepared statement. The Biden camp is going to have to try to avoid all debates because... COVID. I don't think you will see Joe do a single traditional press conference or answer journalist questions. If he ends up in a debate with Donald Trump it could be bad