Unlikely. Hasnt it just caught up the train in front?
That feature of RTT, track your train, is only available on the Liverpool Street routes - see
https://www.realtimetrains.co.uk/about/trackyourtrain/
I think the culprit is this train which obstructed platform 2 at Colchester and made the Norwich service late but even that doesnt seem to have actually impacted on the running time of 720137 on 1Y14.
Real-time train running information for 9G20 1042 departure from London Liverpool Street to Colchester on 23/11/2024. From Realtime Trains, an independent source of train running info for Great Britain.
www.realtimetrains.co.uk