It was not a joint line or station, nor were they joint services, because east of Gas Factory Junction the routes and destinations were different.
ɪt wʌz nˌɑːɾə dʒˈɔɪnt lˈaɪn ɔːɹ stˈeɪʃən, nˈɔːɹ wɜː ðeɪ dʒˈɔɪnt sˈɜːvɪsᵻz, bɪkˈʌz ˈiːst ʌv ɡˈæs fˈæktɚɹi dʒˈʌŋkʃən ðə ɹˈaʊts ænd dˌɛstɪnˈeɪʃənz wɜː dˈɪfɹənt.