Has not been vs is not

English as a Second Language English Vocabulary, Grammar and Idioms
21

We are in a train at a station.
What could be possible answer to this question below. (If it is a correct one.)

Why hasn’t the train been departing?

Thanks

22

Hi,

I’m afraid your sentence doesn’t make sense. The only way I can retrieve the same idea is with: Why hasn’t the train left? or Why isn’t the train leaving?

Alan

23

Thank you