Complex sentence: Lucerne Railway, along with the rest of the central section of the Brünig line between Brienz and Alpnachstad stations, with onward journeys to Interlaken and Lucerne being accomplished by boat; the through rail route was not completed until 1916.
Split into simpler sentences: Lucerne Railway, along with the rest of the central section of the Brünig line between Brienz and Alpnachstad stations. Initially onward journeys to Interlaken and Lucerne being accomplished by boat and the through rail route was not completed until 1916.