Interesting to note that the early
SWR» departure from Yeovil Pen Mill to London Waterloo via Castle Cary is now joined by an early departure from Yeovil Pen Mill to London Waterloo via Yeovil Junction! Prior to December 2019 the latter service started at Yeovil Junction.
The service via Castle Cary departs Yeovil Pen Mill at 0655.
The service via Yeovil Junction departs Yeovil Pen Mill at 0711.
These two services join at Salisbury. From there on they now show on departure boards/screens and RealTime Trains as:
Yeovil Pen Mill & Yeovil Pen Mill to London Waterloo.

Is this unique? Two services, that become one, to the same destination from the same origin, via different routes?