I was there at 96 St I was headed downtown waiting for the train and meanwhile I noticed there was a train on the express track already leaving the station slowly and a NIS train on the local track skipping the stop but I didn’t put much mind into it. Like in 2 minutes my train arrived and it took a while for the train to leave and that’s when I heard a really loud noise like a bang I looked around and saw that a few people also heard the noise. The doors closed but the train just stood there for a while didn’t move, the hvac went off and then the doors opened again and it left the station slowly. Noticed a train waiting to enter the station, a train stuck at 79 St, and train at 72 St. In like an hour I guess, I get a notification from the citizen app that 2 trains collided.