Complex sentence: With Avenue station closed, a new connection was built the same year connecting the line to the former GWR Leamington station, previously only a siding had connected the former LNWR and GWR lines at Leamington.
Split into simpler sentences: With Avenue station closed, a new connection was built the same year connecting the line to the former GWR Leamington station. Previously only a siding had connected the former LNWR and GWR lines at Leamington.