The link line, which ran for a distance of 8.25 miles (13.28 km), was opened without formality on 1 June 1900. The route had no intermediate stations but soon became an important freight route with 60,796 wagons exchanged between the MS&LR (now known as the Great Central) and the Great Western within the first six months of operation; by 1904 this figure had risen by 50%. Two passenger services each way were initially provided by the Great Western, with the Great Central later supplementing this service with three additional trains in each direction.[3] The link was subsequently used for cross-country services, including Aberdeen to Penzance, Oxford to Leicester and Newcastle to Bournemouth.[4]
The line crossed the Northamptonshire–Oxfordshire county boundary five times between Eydon Road Halt and Banbury; at its closest approach to Chacombe, it was on the Oxfordshire side of the boundary, within the parish of Cropredy.[5] A small halt (situated between Chacombe and Coton Farm) was opened on 17 April 1911 and named Chalcombe Road Halt.[6] Serving a rural area, the halt closed on 6 February 1956, and the line itself closed on 4 September 1966.[7]