If that would be right, would be the same as just answering saying that is after the first gym leader for example, because is after the first gym leader, but it doesn't serve as accurate reference or answer for that kind of question.
Even being both after the first gym leader and the elite four is still an huge long drop from being right after the completion of Delta episode. Is like answering saying that the number one came right before the number three, however there is the number two in middle, the number one came before, but not "right before" as is usually done when explaining, using references and aswering questions that fit in this particular scenario. (Especially as giving reference)
Being technically is not being right.
Hope i didn't sound unpleasant, is not my intention, have a good day!