Possibly a silly question, but did anyone know what Geelong line services were being extended to Marshall and Waurn Ponds?

I catch the train multiple times a week to Souther Cross and haven’t noticed any more trains, even though I read that 40 services were impacted. I have however noticed some trains are departing earlier and ending later - although I assumed that was due to the new West Tarneit station. Thanks!

im not a regular traveller on Vline (do it maybe once every 2 years). currently on a Gippsland train; can someone explain to me why between Longwarry and Warragul the tracks split up in elevation (there’s even a point where one goes under a road while the other crosses at the level). What is the point of them splitting up in such a way? My theory is something to do with freight trains and gradients but I’d love someone who actually knows to answer this