66537 runs along the down relief line at Circourt Bridge, Denchworth, on 25 November 2022 with the 6C58 12:11 Oxford Banbury Road to East Usk Yard stone empties. Whilst still in the loop, a train with a similar headcode (the 6C48 12:49 Appleford to Whatley Quarry stone empties) would slowly come up behind it, hauled by 59201.