Complex sentence: Ottawa's three Talent units were built by Bombardier Transportation as part of a larger order for Deutsche Bahn's regional network, and the only significant difference between them and the German units is that their on-board toilets have been decommissioned.
Split into simpler sentences: Ottawa's three Talent units were built by Bombardier Transportation as part of a larger order for Deutsche Bahn's regional network. The only significant difference between them and the German units is that their on-board toilets have been decommissioned.