I estimate 3958 probably cleared Sutherland around 3:20pm. As I was in no hurry, it was interesting watching how CityRail coped with the problem. Only last year the bi-directional signalling between Oatley and Sutherland was finally commissioned after having been installed at least 4 years earlier. Unfortunately, it took about 30' before the bi-directional operation was put in place. In the meantime the service following 3958 arrived at Jannali and sat there. About 15' later I noticed a green light on the bi-directional signal on the up track and shortly after a Tangara service came through, I don't know whether the people on platform 2 were notified that the next down train would depart from Platform 1, of course the suburban train was still sitting at platform 2. Following the suburban an Oscar service to Pt Kembla then followed through bi-di on the up. Of course the up trains were now in a mess. There had not been an up train for at least 40' when at around 3:25pm a Tangara appeared from the south which I caught. At around that time the train sitting at Jannali also moved off.
On reflection it wasn't a bad effort by Cityrail to try and sort out a problem caused by another operator. They made plenty of announcements and my only mild criticism is the time it took to swing the bi-di into action.
A very interesting afternoon's entertainment!