There is one morning 21 journey that presumably runs onto Service 4 when it arrives into town.An EcoCity probably wouldn't be able to do the 21/X21 all day from leaving the depot at around 0530 until arriving back at the depot at around 2030.
There is also a morning 4 journey that appears to be operated by an Ecocity.
Might appear to be madness, but I expect it is something they do for duty efficiency or maybe to even avoid a required changeover 'too early' in the town centre.
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